It is possible that people may misuse our id. We have to try to write while self attesting, example "Id Proof for Reliance connection 0000000000" where the number is the phone number of the connection we are taking. While for opening a Bank account, "Id proof for opening State Bank Account 21/11/2012." This will reduce the misuse, but there is no guarantee. In spite of all these exercises, the real terrorists will always find newer methods. Yes the number of people who may misuse and the possibility can be reduced. With all the precaution, ordinary small time cheats or just anybody and everybody will not be able to misuse.