I am seeking to implement a login process where my React Native app will simply be able to check something intrinsically unique about a user's device to set up an account for them, or alternatively log them into a previously used account. This is simply for a game, where the only variable I am storing is total exp the user has accrued, so I wanted to bypass the need for a strict/secure login implementation.
Anyway, I just wanted to know if there is some functionality in React Native/Expo where I can retrieve some kind of unique number/code/ID associated with a user's device (either Android or iOS) that I can use for this process?