Police RIO identification number often remains difficult to see despite being mandatory

Paris – 19.07.2026: An investigation published by Franceinfo on 17 July once again draws attention to a problem that has remained unresolved for years within the French security forces: the individual RIO identification number is mandatory, but is often not visible or is difficult to read during operations. This once again raises the question of how effective state oversight is over a rule intended to ensure the traceability of police actions.

RIO stands for reference number of identities and organization. It is a seven-digit number, not the officer’s name. It is intended to make it possible to clearly identify a police officer or gendarme after an operation without publicly disclosing personal data. The requirement is based on Article R.434-15 of the French Internal Security Code and has generally applied since 1 January 2014.

A decree of 24 December 2013 stipulates that uniformed officers must wear their individual number while on duty. Plainclothes police officers are also covered as soon as they wear a visible police identifier, such as an armband, during an operation. Exceptions apply in particular to personnel of the domestic intelligence service DGSI, to the protection of French diplomatic missions abroad, and to ceremonial uniforms used at ceremonies.

The rule does not merely require the presence of the RIO, but that it be visible to the public. This is precisely where implementation has repeatedly fallen short. Protective vests, equipment or the placement of the small identifier can impair legibility. Franceinfo also reports cases in which officers are alleged to cover the number in order to make personal identification more difficult. These allegations concern compliance with official duties, rather than the underlying legal framework.

The Conseil d’État had already found in October 2023 that the identification requirement was not being adequately observed. In a further decision of 29 April 2026, the highest administrative court required the Interior Ministry to implement the announced measures without delay. These include instructions to the chain of command, incorporating the requirement into training, and classifying violations as breaches of professional ethics.

At the same time, the state must procure new identifiers and distribute them no later than 31 December 2026. They are to feature larger, more legible white digits on a black background and be affixed to the front of protective vests during public-order operations. The court expressly found that implementation to date was incomplete.

It remains unclear how consistently violations are pursued through disciplinary action in individual cases. A parliamentary question from January 2026 requested information from the government on sanctions imposed by the police inspectorate IGPN and the gendarmerie inspectorate IGGN. Reliable, consolidated public figures are not yet available. For the authorities, visible identification is therefore not only a matter of equipment, but also a test of their internal oversight capacity.