this is exactly where my mind went immediately - 64 bits is more than enough for easy (1 line!) unenforced cross-app tracking of a user for advertising purposes

this is exactly where my mind went immediately - 64 bits is more than enough for easy (1 line!) unenforced cross-app tracking of a user for advertising purposes, basically a super cookie for iOS. If they now require an entitlement for this API it's a privacy win