2AU.01.21
21
User identifiers need to be unique to each single eligible CDR consumer. Data holders should aim to do this by using identifiers unique to each customer (e.g. Customer IDs for the banking sector) and/or verifying the consumer has primary access to their device/service (e.g. mobile number or email address). User identifiers need to be registered and verified external to the CDR authentication flow. If the consumer changes their primary access identifier (e.g. email address), data holders need to verify that the consumer is the intended user of that identifier before changing it (e.g. verifying email with an activation link). Data holders considering suitable user identifiers should exclude any identity attributes that are shared across two or more people or cannot be registered as a verified claim for only one person.
Authenticate: Redirect to Web with One Time Password
25 February 2022
22 September 2025