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The UDID embedded in receipts prevents/deters people from sharing them with others using MITM techniques. Sharing does happen and Apple's article helps address
by buddydvd 14y ago
The UDID embedded in receipts prevents/deters people from sharing them with others using MITM techniques. Sharing does happen and Apple's article helps address that issue.
- tqc 14y agoTrue, but that is only one solution and a flawed one, as device ID can legitimately change - no developer needs to know whether I am using the phone I bought today or the one I bought a year ago.
- buddydvd 14y agoNon-consumable in-app purchases are restorable on any iOS device you can sign in with your iTunes account. When you buy a new iOS device and use StoreKit's restore transaction feature, Apple will generate a new receipt with UDID of that device. In-app purchases are tied to your iTunes account whereas embedded UDIDs are tied to devices you sign in with your iTunes credential.