I haven't read the mechanics of this fully yet, but the first obvious scenario I can foresee:
1. Customer signs up for service on iPhone with "Sign in With Apple".
2. Customer sells iPhone.
3. Customer buys Android phone.
How does customer sign in and keep their same account on the new phone? For sure there might be other mitigation strategies (a web UI that allows account migration etc), but this decision absolutely has ramifications beyond just iOS users of apps using third party signin.
Same is true of customers with devices in both ecosystems - Android phone and an iPad tablet, for example. If customer signs up on the iPad with "Sign in With Apple", how do they log in on the Android phone that only has the other third party login integrations?
People are going to have to think this through, and Apple forcing it on all Apps using third party signin means they are going to have to think it through soon.
1. Customer signs up for service on iPhone with "Sign in With Apple".
2. Customer sells iPhone.
3. Customer buys Android phone.
How does customer sign in and keep their same account on the new phone? For sure there might be other mitigation strategies (a web UI that allows account migration etc), but this decision absolutely has ramifications beyond just iOS users of apps using third party signin.
Same is true of customers with devices in both ecosystems - Android phone and an iPad tablet, for example. If customer signs up on the iPad with "Sign in With Apple", how do they log in on the Android phone that only has the other third party login integrations?
People are going to have to think this through, and Apple forcing it on all Apps using third party signin means they are going to have to think it through soon.