An x.509 certificate is an example of a cryptographic credential. Counterfeiting of credentials is a constant and serious problem, irrespective of the type of credential. The university offers degree, credential, and certificate programs. The university offers 23 teacher credential/certificate programs. The university offers more than 80 degree, certificate, credential and professional programs. Data about citizens can be collected through identification and credential verification companies. It is possible to use a different authentication credential (and thereby technique) in each direction. The issuing institution often maintains a record of the credential as well. Enrolled agent status is the highest credential awarded by the IRS, unlimited rights of representation. Some additionally hold a practicing medical credential, such as a Registered Nurse (RN). Persons with the FACB credential can practice as forensic auditors on a global scale. These designated agencies are members of the Alliance of Credential Evaluation Services of Canada. The EA credential is recognized across all 50 U.S. states. Continuous credential requirements are also called CCRs. The electronic access control system grants access based on the credential presented.