We are working on Child Anti-Abusing App on behalf of the Slovak Republic. Currently we have an Android and iOS app available to the public thats successful in providing help and support. But we need to be more helpful for law enforcement and provide them some kind of unique identifier which could be used in cooperation with mobile network operators to track them down. Right now we are using IP address and software generated identifier. But that’s not enough to track them.
Root or Jailbreak is not a option.
Legal way to solve this, is request phone number, send them code and process it automatically. This would help a great deal, but we cannot enforce kids entering phone number for various reasons.
Another helpful identifier would be IMEI but that is not accessible on Android nor iOS.
Did we miss any option? Is it possible to get some kind of exception to do it in the background? Ideally without user interaction? Maybe contacting someone in Apple/Google (We are able address official proposal of government)? I would be grateful for any advice.