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I am seeking a way to find unique id when user instal my app and that will not change on reinstall/delete/reset etc. I can store it in keyStore etc but I want it to remain the same in any case. As I can't get UDID now. Which identifier I can use e.g. VenderId, device unique identifier, advertisement Identifier or UUID. Any suggestions?

Altaf Rehman
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    Possible duplicate of [How to get a unique device ID in Swift?](https://stackoverflow.com/questions/25925481/how-to-get-a-unique-device-id-in-swift) – Grzegorz Krukowski Oct 29 '18 at 07:59
  • Look like [identifierForVendor](https://developer.apple.com/documentation/uikit/uidevice/1620059-identifierforvendor) suit your needs. – Ricky Mo Oct 29 '18 at 07:59
  • And I need to store it in keychain for getting it if user delete or reset? – Altaf Rehman Oct 29 '18 at 08:04

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