Ideal: No critical service should depend entirely on the availability of one device, one phone number, or one communications channel.

Focus: MFA dependency, SIM-based authentication, device loss, carrier outages, hardware failure, and alternative recovery options.

Central Question: What happens when one device becomes the indispensable gateway to identity, authentication, communications, access, or recovery?
Analyzes the device as a potential concentration point for otherwise separate dependencies. Consider loss, damage, lockout, compromise, battery failure, account recovery, and circular dependencies in which the device needed for recovery is itself inaccessible.

Connects To: Identity, Continuity, Human Agency, Recoverability Engineering.

 


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