How to create a password-less login for mobile app
问题 I'm intested in building some kind of password-less login between a mobile app and an API (assuming I can control both). The motivation is that having to login is very annoying for users and has security risks (eg. users will reuse existing passwords) and I want the users to be able to get started with the app immediately. I'm wondering if there are some techniques that could work. For instance: Generate and random login/password on the mobile device and store the password in the keychain.