Registering a device expands an account's trust boundary. Key generation, user verification, registration binding and removal of old devices form one lifecycle.
Evaluation approach
Design initial registration, reinstallation, device replacement and account recovery separately. Evaluate application evidence together with user authentication.
Application example
When replacing a lost phone, define when the old key and session will be revoked.
Limits and considerations
Automatically treating every device-identity change as fraud can prevent legitimate recovery.
Registration, renewal and revocation
The process continues beyond installation. Reinstalls, phone changes, account changes and lost-device revocation all need defined behavior. Do not blindly transfer trust from an old application instance to a new one.
The server evaluates application evidence, user session and registration authority together. Recovery must not become an easier attack path. Test viewing active registrations and removing unnecessary access.
Checks and decisions
- Limit registrations
- Manage old sessions
- Design secure recovery
Registration architecture must support safe user recovery as well as protection.
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.