PID
PID, Person Identification Data, is the government-issued identity credential at the core of every EUDI Wallet: the set of attributes, such as name, date of birth and a unique identifier, that a member state issues to a citizen as the anchor for everything else in the wallet.
PID is issued by a PID Provider designated by a member state, after an identity check at the highest level of assurance that state offers, which is why other parties can build on it: an attestation about a diploma or a professional registration means little unless the person presenting it is the person it was issued to, and PID is what establishes that. In use it is presented selectively like any other credential: a verifier asking only whether the holder is over 18 receives that answer and not the date of birth behind it. The ARF specifies PID in both the SD-JWT VC and the ISO mdoc format, so a wallet can present it to readers built for either.