Android Application Unique License Key

I am developing a mobile app which would need constant interaction with the web site using web service. For this purpose I am planning to have some kind of unique mobile ID which c

Solution 1:

There is an official licensing platform, have you taken a look at that?

Solution 2:

Nice thought,even i was thinking the same concept for my android application so that people can't sell the downloaded app for free or at lower rates. one thing i would like suggest you can register the user with a unique composed key(made up of two attributs:phone number and his email-ID).

regards karanjit singh

Solution 3:

You can generate a unique ID when the user first logins in during the registration process. You can use the uniqid function to generate a unique id for that user. Then store the unique id in a database along with the users credentials.

Solution 4:

If you intend this to be seamless and behind the scenes, not requiring any user interaction, google for "UUID". There are many algorithms for implementing this, so I really won't get into it too deep here. But I have used a timestamped+extremely large random number implementation and it is working quite well so far. When the app runs, i test if it exists in the SharedPreferences, if not, i create it, and save it in.

BEWARE of Secure.AndroidID. it is not reliably unique unless your app ONLY runs on 2.3+.

Also remember to not try to use IMEI or other such information, because while unique for handsets that have it, is unavailable for verizon mobiles, and non-3g tablets