ios unique identifier across installs : <p>We need to uniquely identify the device and it has to be same across installs (reinstall). We have been using identifier stored in keychain till now so it persists across installs. Now with 10.3 beta the key chain is auto deleted when the app is uninstalled.
Ref: <a href="https://forums.developer.apple.com/thread/72271" rel="noreferrer">https://forums.developer.apple.com/thread/72271</a></p>

<p>Can we use AdIdentifier as unique identifier. We have ads served and we are at the moment using it for the same.</p>
