| Description | The user's social security number (in Denmark, CPR no.) |
| # of values | Singular |
| Permissible values | All valid CPR numbers (which is a particular subset of the set of all numbers 10 digits long; read more here) |
| Semantics | In a Danish context, the user's unique social security number, as registered by the Danish CPR registry, with the prefix 'urn:mace:terena.org:schac:personalUniqueID:dk:CPR:'. |
| Examples | urn:mace:terena.org:schac:personalUniqueID:dk:CPR:0101801234 |
| Typical use | Authorisation, Logging |
| LDAP name | None, or possibly norEduPersonNIN |
| WAYF status | MAY |
| Notes | Should only be exposed if strictly necessary in the Danish Personal Data Protection Act's sense. Solely entities processing data on behalf of the public sector can receive this attribute. |