[allenbrunson]

me and my best friend share my apple id and password for use with the app store. we definitely don't get each other's iMessages. she uses her own apple id and password when logging in to that.

[DavideNL]

yes, App store login is separate from Messages login.

Also, if someone WOULD log in with your account in iMessage (or FaceTime), you would know this because you get a notification like this on EVERY device: https://support.apple.com/library/content/dam/edam/applecare...

[morganvachon]

I didn't realize the two features can be set up separately, thanks!