Comment by PeterStuer

It is from the banks that leveraged their KYC but was adopted very broadly by gov and many other id required or linked services. AFAIK it does not need a computer to activate besides your phone and one of those bank issued 2FA challange card readers.

For CSAM, also AFAIK, first 'activation' includes a visit to your local municipality to verify your identity. Unless you go via itsme, as it is and authorized CSAM key holder.