I recently used an app to enter a voucher code and then redeem it to get free stuff. But it only allows 1 code/ phone. I was wondering, what do the iOS apps use when identifying a phone/user?
IOS – how does an app recognize the phone
applicationsios-appstore
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Best Answer
There are a number of methods an app can use to uniquely identify a device or user.
Transitory (persistent whilst app is installed)
Permanent
Deprecated