The software identification number of UN Regulation 156: an identifier, defined by the vehicle manufacturer, for the software relevant to a type approval.
UN Regulation 156 asks vehicle manufacturers to manage software updates so that an approved vehicle type stays within its approval. The RXSWIN identifies the approval-relevant software of a system.
An identifier read out of a vehicle is a claim made by that vehicle's software. Attestation backs the claim with a measurement signed by hardware, which matters when software from several suppliers is updated over the air.
Attested autonomous vehicles and machines
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Next fixed date: EU Digital Identity Wallets are due in every member state on 24 December 2026, 42 days from now.