Warehouse glossary

EPC

The EPC (electronic product code) is the identifier written to the memory of a UHF RFID tag and reported by the reader each time it reads the tag.

Also known as
electronic product code · EPC code

Reviewed October 29, 2026 by the Business in a Wave team

Its use in the warehouse

UHF RFID tags of the EPC Gen2 standard store the EPC in a dedicated memory bank. The reader does not need line of sight: it reports the EPC of every tag within range of its antenna, and a system links it to the item, case, pallet or location that carries the tag.

How Chainlink WMS applies it

In Chainlink WMS, the RFID printer writes to each tag a 96-bit identifier that Chainlink generates and registers, unique in your account. When a handheld or a portal reads that EPC, Chainlink identifies the product, lot, serial number, pallet or location it corresponds to. A tag that is not registered in your account is reported as unknown.

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