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# Guide on UDI Direct Device Markings
- URL: https://www.fdaweb.com/guide-on-udi-direct-device-markings/
- Published: 2017-11-20T12:00:00.000Z
- Updated: 2026-09-14T23:02:37.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5140165

*Federal Register* notice: FDA has made available a guidance entitled “Unique Device Identification: Direct Marking of Devices.” This document is intended to clarify when direct marking of devices with a unique device identifier is required, and to assist in understanding direct marking requirements. To view the notice, click [here](https://www.gpo.gov/fdsys/pkg/FR-2017-11-17/pdf/2017-24992.pdf?ref=fdaweb.com).