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If you previously had Facebook or Messenger installed on the phone it's possible they saved some user info on the device or in the cloud linked to your device I
by cdlvan 8y ago
If you previously had Facebook or Messenger installed on the phone it's possible they saved some user info on the device or in the cloud linked to your device ID.
- Im_Mr_Manager 8y agoAFAIK device uuid has been unique to device+app for at least 2 years now (iOS).
- zer00eyz 8y agodevice + app having a unique UUID has been going on longer than that. 3 years ago uber got popped for this: https://www.theverge.com/2017/4/23/15399438/apple-uber-app-store-fingerprint-program-tim-cook-travis-kalanick https://www.theverge.com/2017/4/23/15399438/apple-uber-app-s... I can tell you that fingerprinting is still possible today.
- aplummer 8y agoIt’s company not app on iOS, you get a new one if you delete every app from one publisher