Device Imei Locking For Tablets

In my application I used to lock application with IMEI code. I mean during startup application checks device IMEI and compares it with list of allowed devices. If device is in list

Solution 1:

If the user is savvy enough to run your APK in the simulator, he's savvy enough to decompile it and remove your check.

Moreover, if I were you, I would go for offering more functionality to registered and logged-in users, rather than trying to prevent unregistered users from launching your application. Nothing is more annoying than an application that dysfunctions due to such a security feature (think Steam or Windows Live or Ubisoft's infamous denial-of-play-for-paying-users). It only pushes people to pirate your application.

Solution 2:

As i wrote here it is not a good idea using the IMEI to identify a certain device.

Solution 3:

IMEI check could be good idea if offered exclusively for phones, using phone functionality but it is depended on country regulations. There are few countries where EIR (equipment identity register) registry is implemented within their mobile networks. It checks for stolen and fake IMEI's which are grey and black marked. Black marked imei's can't use phone functionality, grey marked are suspected and traced upon legal need. If this is the case then using imei check will be valuable.