ISO/IEC 8506:2024

International
Standard
ISO/IEC 8506
First edition
Information technology —
2024-09
Automatic identification and
data capture technology —
AIDC application in industrial
construction
Technologies de l'information — Technologie d'identification
automatique et de capture de données — Application de l'AIDC
pour la construction industrielle
Reference number
© ISO/IEC 2024
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© ISO/IEC 2024 – All rights reserved
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Abbreviated terms . 4
5 Methodology . 5
5.1 Industrial construction and AIDC .5
5.2 Items in industrial construction .5
5.2.1 General .5
5.2.2 Items categories .6
5.2.3 Hierarchy, relationship and life cycle .6
5.3 Methodology of identification in industrial construction .6
5.3.1 Methodology overview .6
5.3.2 What: Item to be identified .8
5.3.3 Who: Partner responsible for identifying items .9
5.3.4 When: Duration of the identification and the AIDC .9
5.3.5 Where: Place of identification.9
5.3.6 How: Identification, data and information services solutions .9
6 Unique identification framework . 10
6.1 General rules .10
6.1.1 General .10
6.1.2 Standard name level or model level .10
6.1.3 Batch or lot level .10
6.1.4 Serial level (unique identifier item) .10
6.2 Principles of unique identification . .10
6.2.1 Uniqueness principle .10
6.2.2 Stability principle .11
6.3 Unique identification and its data carrier .11
7 Application test .11
8 Metadata .11
9 Information service .12
10 Application guide .12
10.1 General . 12
10.2 Guidance for the designer . 12
10.3 Guidance for the manufacturer . 12
10.4 Guidance for the constructor . 12
10.5 Guidance for the construction engineer . 12
10.6 Guidance for the owners and maintainer . 12
10.7 Guidance for the consumers and the public . 12
Annex A (informative) Background information about industrial construction .13
Annex B (normative) RFID encoding .21
Annex C (informative) Examples of identification in industrial construction .26
Bibliography .30

© ISO/IEC 2024 – All rights reserved
iii
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical activity.
ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations,
governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of document should be noted. This document was drafted in accordance with the editorial rules of the ISO/
IEC Directives, Part 2 (see www.iso.org/directives or www.iec.ch/members_experts/refdocs).
ISO and IEC draw attention to the possibility that the implementation of this document may involve the
use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of any
claimed patent rights in respect thereof. As of the date of publication of this document, ISO and IEC had not
received notice of (a) patent(s) which may be required to implement this document. However, implementers
are cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents and https://patents.iec.ch. ISO and IEC shall not be held
responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www.iso.org/iso/foreword.html.
In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 31, Automatic identification and data capture techniques.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.

© ISO/IEC 2024 – All rights reserved
iv
Introduction
Construction has a history that spans the entire human civilization. Traditional construction has lagged
behind due to the interrelated issues of the rising costs, lengthy duration, massive pollution and the shortage
of skilled construction labour. Industrial construction is a rapidly growing sector of construction, has the
potential to be an effective solution for addressing these issues. See Annex A for more details. In the industrial
construction business, mega structures including power plants, skyscrapers, warehouses, factories and
other larger-than-life projects are designed, manufactured, installed and maintained by the industrialized
methods. The methods include standardized design, factory production, assembly-style construction,
integrated decoration and digital management. Industrial construction is an off-site, manufacturing-style
construction method and system which covers all aspects of making a building, including
a) the process of making construction items such as prefabricated components, building parts, connectors
or accessories from raw materials in plants,
b) the assembly, storage and shipment to the building site,
c) the assembly to specifications and building inspections,
d) maintenance,
e) potential demolition,
f) material recovery, and
g) disposal.
Automatic identification and data capture (AIDC) technology is the main technology for item and
asset automatic identification and data capture since 1970s. In the past 50 years, AIDC and its global
standardization have stimulated the digital transformation and informational management in the retail,
healthcare and logistic industries globally.
The systematic study of AIDC technology application standards for industrialized construction will help to
cope with industry challenges and promote the digital transformation and upgrading of the industry.

© ISO/IEC 2024 – All rights reserved
v
International Standard ISO/IEC 8506:2024(en)
Information technology — Automatic identification and
data capture technology — AIDC application in industrial
construction
1 Scope
This document specifies the identification, data, information services, application guidance aspects and
applicable requirements of automatic identification and data capture (AIDC) technology for different items
and their hierarchy in industrial construction during their whole life cycle.
This document
— provides unique identification for items in industrial construction,
— specifies the semantics and data syntax to be used,
— specifies the data carriers to be used on items of various categories, substitutes and sizes,
— makes recommendations about the metadata of the items,
— specifies the application test method and parameters based on the large-scale test and scientific
sampling rules,
— defines the information services protocol to be used as an interface between business applications and
the AIDC system, and
— makes guidance for designers, workers, engineers, managers, end users and maintainers about the AIDC
application in their daily work.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 6707-1, Buildings and civil engineering works — Vocabulary — Part 1: General terms
ISO 6707-2, Buildings and civil engineering works — Vocabulary — Part 2: Contract and communication terms
ISO 6707-3, Buildings and civil engineering works — Vocabulary — Part 3: Sustainability terms
ISO 6707-4, Buildings and civil engineering works — Vocabulary — Part 4: Facility management terms
ISO/IEC 15418, Information technology — Automatic identification and data capture techniques — GS1
Application Identifiers and ASC MH10 Data Identifiers and maintenance
ISO/IEC 15434, Information technology — Automatic identification and data capture techniques — Syntax for
high-capacity ADC media
ISO/IEC 15459-1, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 1: Individual transport units
ISO/IEC 15459-2, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 2: Registration procedures

© ISO/IEC 2024 – All rights reserved
ISO/IEC 15459-3, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 3: Common rules
ISO/IEC 15459-4, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 4: Individual products and product packages
ISO/IEC 15459-5, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 5: Individual returnable transport items (RTIs)
ISO/IEC 15459-6, Information technology — Automatic identification and data capture techniques — Unique
identification — Part 6: Groupings
ISO/IEC 15961-1, Information technology — Data protocol for radio frequency identification (RFID) for item
management — Part 1: Application interface
ISO/IEC 15961-3, Information technology — Data protocol for radio frequency identification (RFID) for item
management — Part 3: RFID data constructs
ISO/IEC 15961-4, Information technology — Radio frequency identification (RFID) for item management: Data
protocol — Part 4: Application interface commands for battery assist and sensor functionality
ISO/IEC 15962:2022, Information technology — Radio frequency identification (RFID) for item management —
Data protocol: data encoding rules and logical memory functions
ISO/IEC 15963-1, Information technology — Radio frequency identification for item management — Part 1:
Unique identification for RF tags numbering systems
ISO/IEC 16022, Information technology — Automatic identification and data capture techniques — Data Matrix
bar code symbology specification
ISO/IEC 18000-3:2010, Information technology — Radio frequency identification for item management — Part
3: Parameters for air interface communications at 13,56 MHz
ISO/IEC 18000-63, Information technology — Radio frequency identification for item management — Part 63:
Parameters for air interface communications at 860 MHz to 960 MHz Type C
ISO/IEC 18004, Information technology — Automatic identification and data capture techniques — QR code
bar code symbology specification
ISO/IEC 18046-1, Information technology — Radio frequency identification device performance test methods —
Part 1: Test methods for system performance
ISO/IEC 18046-2, Information technology — Radio frequency identification device performance test methods
— Part 2: Test methods for interrogator performance
ISO/IEC 18046-3, Information technology — Radio frequency identification device performance test methods
— Part 3: Test methods for tag performance
ISO/IEC 18046-4, Information technology — Radio frequency identification device performance test methods
— Part 4: Test methods for performance of RFID gates in libraries
ISO/IEC 18046-5, Information technology — Radio frequency identification device performance test methods
1)
— Part 5: Test methods for Environmental characteristics of RFID tag used in sporting goods
ISO/IEC 19762, Information technology — Automatic identification and data capture (AIDC) techniques —
Harmonized vocabulary
ISO/IEC 19987, Information technology — EPC Information Services (EPCIS)
ISO/IEC 19988, Information technology — GS1 Core Business Vocabulary (CBV)
1) Under preparation. Stage at the time of publication: ISO/IEC FDIS 18046-5:2024.

© ISO/IEC 2024 – All rights reserved
ISO/IEC 20830, Information technology — Automatic identification and data capture techniques — Han Xin
Code bar code symbology specification
ANSI MH10.8.2, Data Identifiers
GS1 General Specifications
GS1 EPC Tag Data Standard (TDS)
GS1 GLN Allocation Rules Standard
GS1 GTIN Allocation Rules Standard
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6707-1, ISO 6707-2, ISO 6707-3,
ISO 6707-4, ISO/IEC 19762 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
industrial construction
off-site construction method that incorporates standardized digital design, industrialized manufacturing,
assembly (3.15) construction, integrated decoration and digital management characteristics
3.2
prefabricated component
structural component (3.14) and other components that constitute a building structural system, which is
prefabricated in a factory or on-site
3.3
building part
unit that is prefabricated or assembled in a factory or on-site to form a single building product, a composite
product of the envelope system, facility and pipeline system, and internal decoration system of a building
3.4
modular unit
integrated factory prefabricated unit, which can be transferred as a whole, such as a complete room, a part
of a large room, or integrated function units (e.g. bathrooms, elevators, kitchens and machine rooms)
3.5
integrated kitchen
kitchen that is assembled from factory-produced floors, ceilings, walls, cabinets, kitchen equipment and
pipelines, and that is mainly assembled by non-wet construction
3.6
integrated bathroom
bathroom that includes a floor, ceiling, wall, sanitary ware equipment and pipelines produced by the factory
and that is mainly assembled by non-wet construction
3.7
connector
unit that is used to connect functional building components (3.14) or parts
3.8
accessory
non-structural item that is installed on buildings or structures to improve functions

© ISO/IEC 2024 – All rights reserved
3.9
metadata
data or model that provide information about other data
3.10
master data
core information about the "who" and "what" in a business relationship
Note 1 to entry: The "who" can include the name, address and identification codes of the buyer and seller plus details
of shipping, delivery and billing locations. The "what" shall include the product information such as product name,
size, product model and unique identification number.
3.11
traceability
ability to trace all or part of the processes from procurement of raw materials (3.13) to production,
consumption and disposal to clarify "when and where the product was produced by whom"
3.12
information service
set of system used for gathering, processing, storing and communicating information flow
3.13
material
raw material
substance or mixture of substances that is used to produce a product
Note 1 to entry: Materials are divided into primary materials, also known as primary raw materials, (sand, crushed
stone, clay, etc.) and secondary materials, also known as secondary raw materials (concrete, building mixes, rolled
metal, etc.).
3.14
component
constituent part of equipment that cannot be physically divided into smaller parts without losing its
character
3.15
assembly
set of one or more sub-assemblies or components (3.14) constituting a single end-use product
4 Abbreviated terms
AFI application family identifier
AI application identifier
BIM building information modelling
DI data identifier
PC protocol control
HVAC heating, ventilation and air conditioning

© ISO/IEC 2024 – All rights reserved
5 Methodology
5.1 Industrial construction and AIDC
Figure 1 — AIDC and industrial construction
The evolution of industrial construction is requiring efficient supply chain management and transparency,
and automatic data collecting and sharing can effectively improve its productivity. AIDC technology is one
of the keys to help achieve these measures. The AIDC enhanced industrial construction process, illustrated
in Figure 1, starts from planning and BIM project design stage. Right from the early stages of a building’s
design, architects and engineers can identify the products and parts that meet their specifications, including
their environmental and operational cost attributes, and track their delivery on-site the detailed design
models of the components or parts which would be the main compositions of the building would be sent to
the prefabricated components plants. At the end of the production process, the items, illustrated in Annex A,
are AIDC-labelled, and hence, they can be identified during the storage, transportation, assembly and
maintenance, and the master data about the items and the process can be recorded. The identification tag
would be utilized during the whole life cycle of the components and the construction projects.
5.2 Items in industrial construction
5.2.1 General
Since 1970s, AIDC technology is the main technology used to automatically identify and capture data
for items and assets. In the past 50 years, AIDC and its global standardization have stimulated digital
transformation and informational management in the retail, healthcare and logistic industries throughout
the world.
As items in industrial construction are very different from items in grocery stores and hospitals, data,
management approach and life cycle requirement are distinctive to the category of items.

© ISO/IEC 2024 – All rights reserved
5.2.2 Items categories
5.2.2.1 Items without off-the-shelf identifications
This category "items without off-the-shelf identifications" includes the prefabricated components, parts,
connectors, and the roofing, windows and doors, items in the HVAC and firefighting items etc. Physical items
can also be classified as industrial construction items, such as building unit, apparatuses, assets or parts
of the building or infrastructure. The characteristic to identify physical items is that they are the objects of
information management for industrial construction and unique identification is required. For this category,
the methodology and identification framework rules defined in 5.3 and Clause 6 shall apply, and the detailed
identification solutions will be standardized in future documents.
5.2.2.2 Items with off-the-shelf identifications
The category "items with off-the-shelf identifications" includes items are mainly the products that already
have globally accepted ISO standardised AIDC data carriers and that are uniquely identified according to
ISO/IEC 15459-1, ISO/IEC 15459-4, ISO/IEC 15459-5 and ISO/IEC 15459-6. For example, the lights which
already have GS1 barcodes. The identifications shall be maintained, recorded and referenced by information
management systems of industrial construction during the life time of the items as the identification is
agreed between business partners, and detailed information about the characteristics of the item such as
brand name, net weight/content and package measurements, is available for partners. One item shall not
carry more than one unique identifier. All users of GS1 identification keys and supporting data attributes
shall comply with the conformance specifications and rules provided in GS1 General Specifications, which
include the allocation and management rules for each GS1 identification key.
NOTE GS1 identification keys and GS1 application identifier data and GS1 data carriers are defined in GS1 General
Specifications.
5.2.3 Hierarchy, relationship and life cycle
Hierarchy are the key characters for the identification and data record of components, connectors and
building parts, etc. The hierarchy in this document means the composition relationships among different
level of items. The hierarchy for the items in industrial construction are defined by detail-designed BIM
model of different building, prefabricated components, building parts, modular units and accessories in the
certain construction project. For example, a building part is made of two specific components connected by
five specific connectors. See Figure 2 for a reference.
The relationship of the items in industrial construction are defined by detail-designed BIM model of
different building, prefabricated components, building parts, modular units and accessories in the certain
construction project. As for the components, connectors and building parts, the connection and installation
order of the items are the key characters for its identification and data record.
Life cycle for the identification are mainly defined by the stakeholders of the construction which can be the
contractor, subcontractor, owner, maintainer, end-users or other entities defined by regulations or orders of
certain territory. The identification shall be valid during the defined life cycle.
5.3 Methodology of identification in industrial construction
5.3.1 Methodology overview
The hierarchy, relations and life cycle of entities in industrial construction is illustrated in Figure 2.

© ISO/IEC 2024 – All rights reserved
Figure 2 — Hierarchy, relationship and life cycle of industrial construction entities
The items in industrial construction is illustrated as building materials, building parts, modular units,
components, connectors and the identification methodology includes the configuration of the what, who,
when, where and how issues about entities in the whole construction process – see Figure 3.

© ISO/IEC 2024 – All rights reserved
Figure 3 — Identification methodology for industrial construction
5.3.2 What: Item to be identified
5.3.2.1 Physical entities in construction
The physical entities in construction, such as the building materials, components, building parts, connectors,
accessories and their groupings during the manufacturing and logistic process shall be identified.
a) The building materials includes a large variety of cement, sand, steel, glass, timber, bamboo, tiles, bricks,
wires and tunnels as illustrated in Figure 2. The identification of building materials shall be defined in
accordance with the physical materials, the package and the amount of the materials. The predefined
unit or certain amount of building materials shall be bound with an AIDC data carrier of corresponding
unique identification on the packages or its surface.
b) The components, which includes the walls, pillars, girders, plates etc., that are manufactured in plants,
shall be numbered in accordance with the unique identification rules in Clause 6 and can be individually
identified. The connectors and the accessories such as sleeves or doors shall be identified individually
or on their packages. The components, connectors or accessories shall be labelled with an AIDC data
carrier of corresponding unique identification.
c) The building parts, such as stairs, integrated kitchens, integrated bathrooms, bridge segments which
would be formed or assembled by components, connectors and/or construction materials in plants or
in the construction site, shall also be numbered and identified individually. The building parts shall be
labelled with an AIDC data carrier of corresponding unique identification.
d) The modular units, such as the modular units in the structural system, the external-envelope system,
the facility and pipeline system, and the internal decoration system of a construction or infrastructure
which are formed by factory-produced components, construction material, HVAC devices, pumps, etc.,
are all objects that shall be identified. The modular units shall be labelled with an AIDC data carrier of
corresponding unique identification.

© ISO/IEC 2024 – All rights reserved
5.3.2.2 Physical assets
The assets in a building or infrastructure, such as facilities, devices and the accessories such as windows
or doors, shall also be identified. Physical assets are the physical entities or their derivatives in the
construction process in most cases after the construction or the infrastructure is delivered and treated as
physical assets. A physical entity can be a product at one stage of its life cycle and an asset at another. The
use of a product identifier shall be tied to business processes associated with products such as ordering,
stock keeping and invoicing. The use of an asset identifier shall be tied to business processes associated with
asset management such as capitalized assets, depreciation, maintenance, repair and operations.
The typical assets are the items which are functional content or fraction of a building or infrastructure which
shall be managed and maintained by owners. The assets include devices, modular units and/or accessories
such as doors and windows. The physical assets shall be labelled by owners of them with an AIDC data
carrier of corresponding unique identification, which shall be read and recorded during their life cycle.
5.3.2.3 Location
The location or position of a building or infrastructure or relative location in a building or infrastructure
shall be identified with unique identification. The unique identification of location shall be recorded in the
industrial construction process or maintenance process etc. with their GLNs or other location references.
The use of GS1 Global Location Number (GLN) shall comply with GS1 GLN Allocation Rules Standard. The
other location identification shall be led by location reference ANSI MH10.8.2 Data (L-999L) of identifiers.
The unique identification of location can be labelled on the physical surface of the location and can be read,
verified and recorded during the construction or assets management process.
5.3.3 Who: Partner responsible for identifying items
The brand owners of some identified items such as construction material supplier or connector and
accessories supplier shall be the responsible party for the identification of their own items. The other
responsible partners who shall add tags on items like components, building parts and/or modular unit can
be contractors, sub-contractors or owners of construction projects etc. They shall be the owner of one of
the company identification number (CIN) issued by an issuing agency in the frameworks of ISO/IEC 15459-2
and ISO/IEC 15459-3. The rules of the chosen issuing agency shall be applied. This is, for example, the item
number allocation rules, code specifications and other application details.
5.3.4 When: Duration of the identification and the AIDC
The identification shall begin as soon as the item is manufactured and shall last for the intended management
requirements timeline. For example, the identifier for the specific quantity of wall paintings.
The identification shall be either utilized or recorded, or both as the completion of the manufacturing
or construction, and the AIDC shall be available during the intended timeline in the intended or casual
construction or maintenance environment.
5.3.5 Where: Place of identification
The position identification conforms with ISO/IEC 6523-1 and the relevant information of the items and
the process can be collected and ascertained, recorded, shared, exchanged and re-examined between
stakeholders of the industrial construction. The actual position of the tagging, writing and reading events
shall be subject to the agreement or contract between partners.
5.3.6 How: Identification, data and information services solutions
The identification, which shall follow the rules in Clause 6, related data of identification and business evens,
and information services solutions shall be clarified for different items in industrial construction business.
The actual identification data carrier solution shall be subject to the requirement or contract of partners to
meet the requirement of the construction project.

© ISO/IEC 2024 – All rights reserved
6 Unique identification framework
6.1 General rules
6.1.1 General
Unique identification means to issue a unique data string which “represents” an item that can be encoded in
the AIDC data carrier and attached to the item. The unique identification links the relevant data record with
the item in the object information management systems. However, the item mentioned can be in a different
form of granularity and shall be issued by appropriate partners on the consideration of the balance between
cost and management requirements. The unique data string shall comply with ISO/IEC 15459-3, and shall be
determined by an issuing agency code (IAC) unique enterprise identifier (CIN) assigned by issuing agencies.
6.1.2 Standard name level or model level
As for the physical items defined in 5.3.2.1 and 5.3.2.2 such like prefabricated components, the highest
identification granular level shall be the item with the same name in the same type of items in the plant. The
characteristic for this identification granularity is that the things under this item shall have the same model
name, detailed design model in BIM, cost and materials (e.g. one kind of prefabricated components designed
by a manufacture with the defined shape, dimensions and manufacture parameters).
6.1.3 Batch or lot level
The lower granular for physical items defined in 5.3.2.1 and 5.3.2.2 can be the components with the same
batch or lot number which differs from the other with production details, or can be required by partner or
regulations to identify at this level. For example, the batch of the said prefabricated components in 6.1.2
with the batch number A0522.
6.1.4 Serial level (unique identifier item)
The most granular level shall be the unique identifier item (UII) for each of serial items which bound to
the specific time, place or other detailed production information or required by partners or regulations to
identify at this level (e.g. a single component of the said prefabricated component in 6.1.3). The batch or lot
number can be referenced by the UII.
The UII shall contain the IAC, unique enterprise identifier (CIN) assigned by the issuing agency, and the
serial number for each single item. The UII can also contain additional AIDC data. See ISO/IEC 15459-3 for
more details.
6.2 Principles of unique identification
6.2.1 Uniqueness principle
The uniqueness principle includes the following concepts.
a) The sole purpose of the unique identification is to uniquely identify the item, not to carry information
about the item.
b) Differences in the basic characteristics for certain granularity items shall result in a different unique
identification and each single item on the serial granularity level shall be assigned a unique serial
number. All users of GS1 identification keys and supporting data attributes shall comply with rules
provided in GS1 General Specifications, which include the allocation and management rules for each GS1
identification key.
NOTE GS1 identification keys and GS1 application identifier data are defined in GS1 General Specifications.
c) Each single physical item on the serial granularity level shall be assigned a serial number.

© ISO/IEC 2024 – All rights reserved
d) In general, the party which is responsible for the quality and management of the items shall be
responsible for the uniqueness of the unique identification for items. The allocation of GS1 unique
identification shall follow the rules in GS1 General Specifications and related documents such as GS1
GTIN Allocation Rules Standard and GS1 GLN Allocation Rules Standard.
e) Related data, other than the unique identification, linked to the items shall be recorded, maintained,
stored and transferred by the issuer.
6.2.2 Stability principle
The stability principle includes the following concepts.
a) Once the unique identification number is assigned, it shall remain unchanged if the basic characteristics
of the item have not changed.
b) The unique identification shall be valid during the existence of the referenced item.
NOTE Valid means that the unique identification number and the linked data in issuer can be retrieved from
the issuer by other parties.
c) The unique identification number shall not be reassigned to another item.
d) Data, other than the UII, that is linked to the items shall be recorded, maintained, stored and transferred
by the issuer.
6.3 Unique identification and its data carrier
The unique identification shall consider the differences among building materials, prefabricated components,
building parts, connectors, modular unit, assets and positions. The unique identification shall be as given in
the following standards.
a) The unique identification shall comply with ISO/IEC 15459-1, ISO/IEC 15459-4, ISO/IEC 15459-5 and
ISO/IEC 15459-6.
b) The syntax of unique identification in 2D barcode data carrier shall conform to ISO/IEC 15418,
ISO/IEC 15434 and/or rules in the ISO/IEC standardized data carrier symbology standards such as
ISO/IEC 16022, ISO/IEC 18004 and ISO/IEC 20830. When choosing a 2D barcode as a data carrier, the
data carrier identifier defined in ISO/IEC 15424 can prefix the unique identification message before
transmission.
c) The syntax for RFID tags shall comply with ISO/IEC 15961-1, ISO/IEC 15961-3, ISO/IEC 15961-4,
ISO/IEC 15962 and ISO/IEC 15963-1. The RFID tag which carries GS1 data shall also comply with GS1
EPC Tag Data Standard (TDS). The RFID tag and devices shall comply with air interface standards such
as ISO/IEC 18000-63 or ISO/IEC 18000-3:2010, Mode 3. When choosing RFID as a data carrier, encoding
rules described in Annex B shall be used. Examples of identifiers are provided in Annex C.
7 Application test
The application test shall be conducted at typical application environment. These tests shall include a
series of performance tests and mechanical tests of the tags and readers under extreme temperature, with
different tagging and labelling methods, and after some mechanical processes such as scratch, pressure and
corroding. The performance test shall be based on ISO/IEC 18046-1, ISO/IEC 18046-2, ISO/IEC 18046-3,
ISO/IEC 18046-4 and ISO/IEC 18046-5. The test methods and performance requirements for factories,
transportation and on-site construction scenarios will be standardized in another standard.
8 Metadata
Metadata are the basic information units of prefabricated components, connectors, component parts and
accessories. They are the property data set or data model to describe the information recorded from the real

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physical objects and can be standardized separately. For each kind of entity, the metadata set can include the
classification of objects according to IEC 81346-1, IEC 81346-2, ISO 81346-10, ISO 81346-12, and the data set
to describe the real entities such as the manufacture’s name, weight, three-dimensional measurement and/
or other characters.
9 Information service
An information service framework with reference to ISO/IEC 19987 and ISO/IEC 19988 provides the data
interface and business interoperation interface between the AIDC systems and the application systems, and
defines the application program interfaces (APIs) of services for partners and consumers to access. It also
shall define the service registration strategy and resolve strategy.
10 Application guide
10.1 General
The application guidelines shall provide practical guidance for all staff of stakeholders in the in
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