Login and authentication are a really big deal, and represent some of the most complex code, in one of my apps. In fact, I just made a release last night, to t

Login and authentication are a really big deal, and represent some of the most complex code, in one of my apps. In fact, I just made a release last night, to try ensuring that we reduce the number of bad emails (I thought I could get away with eschewing the traditional “confirm email” thing —I was wrong. There’s a reason the classics are popular). Since it is an iOS app, I can implement Sign in/up with Apple, which helps a lot. It’s still a work in progress, though. I use the Keychain to store login info, with Face/Touch ID, to smooth the login process. Works fairly well.