Apple’s fingerprint verification is considered to be the best among smart phone security. But it requires a great deal of care as well. A new problem has been discovered in touch id hardware which can occur as “Error 53” or “hardware failure”. It means that if an iPhone’s touch id is replaced by an unofficial repair store then it may completely lock the phone. Apple has addressed this issue and advised its users to only go to official apple stores for repairs. It can be costly but it will lessen further problems.