Can identifierForVendor be same for two iOS device installed the same app by using iTunes restore back up?

Question

I have used identifierForVendor to uniquely identify a Device for one of my app, I am fetching this value on app launch and storing it into keychain by setting keychain property thisDeviceOnly . Now I am having issues, the identifierForVendor returning same vendor id when I tried installing it from itunes back up.

Steps I am doing:

• I have two iPads say iPad1 and iPad2.
• iPad1 has app installed say X already and iPad2 is a new device.
• I have take taken backup of iPad1 on iTunes.
• Now I restored iPad2 from the iPad1 back up using iTunes
• I launched the X app on iPad2 and getting the vendor id same as iPad1
  app X.

did any one obsorved this issue or its something else? thanks.

Answer 1

我认为这是因为钥匙串是在iCloud上共享的，因此与您的iCloud帐户同步的任何新设备都将自动获取钥匙串。