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The Electronic Product Code™ (EPC) is syntax for unique identifiers assigned to physical objects, unit loads, locations, or other identifiable entity playing a role in business operations.

EPCs have multiple representations, including binary forms suitable for use on Radio Frequency Identification (RFID) tags, and text forms suitable for data sharing among enterprise information systems.

GS1's EPC Tag Data Standard (TDS) specifies the data format of the EPC, and provides encodings for numbering schemes -- including the GS1 Keys -- within an EPC.

When unique EPCs are encoded onto individual RFID tags, radio waves can be used to capture the unique identifiers at extremely high rates and at distances well in excess of 10 metres, without line-of-sight contact. These characteristics of RFID can be leveraged to boost supply chain visibility and increase inventory accuracy.

EPC/RFID Standards


Tag Data Standard (TDS)

Tag Data Translation (TDT)

RFID Air Interfaces

UHF Gen2 Air Interface

HF Air Interface

RFID Software Interfaces

Low Level Reader Protocol (LLRP)

Discovery Configuration & Initialisation (DCI)

Reader Management (RM)

Application Level Events (ALE)

Implementation Guidelines

Transport and Logistics Industry User Group – Implementation Guide – TLS Pilots

Returnable Transport Item (RTI/Pallet Tagging) Guideline

RFID-based Electronic Article Surveillance (EAS) Tehnical Implementation Guide

RFID-based Electronic Article Surveillance (EAS) - Strategic Overview

Standards library

Standards library

Need to know about the technical details behind the standards? The GS1 standards library gives you access to all our documentation