When a developer uploads an app to the App Store, Apple applies encryption, specifically known as FairPlay. This process encrypts the application's binary (the executable code) so that it can only be run on devices authorized by the user's Apple ID. This ensures that apps cannot simply be copied from one device to another without verification.
When a developer uploads an app to the App Store, Apple applies encryption, specifically known as FairPlay. This process encrypts the application's binary (the executable code) so that it can only be run on devices authorized by the user's Apple ID. This ensures that apps cannot simply be copied from one device to another without verification.