> - Using SMS for mobile login (think dating apps for example)
Dating apps in particular seem to be a problematic example to me. In some regions, phone numbers change owners quite easily (e.g., no possibility to port a phone number to a new contract, and quick re-cycling of the phone number when a contract is terminated).
Dating apps in particular seem to be a problematic example to me. In some regions, phone numbers change owners quite easily (e.g., no possibility to port a phone number to a new contract, and quick re-cycling of the phone number when a contract is terminated).