The NO-ID code creates a cryptic function from the MD5 (Message Digest Algorithm 5) encryption, which is converted into a 32-digit hexadecimal number (128-bit). Unauthorised persons cannot read this NO-ID, because the hash value cannot be recalculated.
- The NO-ID code is transferred to a smart card
- as QR Code
- Numeric as a number, letter
- Electronically on chip
Only the owner of the card, without giving his name, has the opportunity to access his data.