Positioning human body as a recognition tool is the current leading way of identification at every ground now. Alphanumeric and other sort of randomly generated passwords are on the verge of losing ground now. How Apple started the use of fingerprint identification in gadgets, like that now every electronic gadget would let the initiation post biometric identification to avoid any interference.
Increasing trend in the technology has made process easy and quite fast, no doubt but changes always comes with bunch of challenges that growing technology is facing in terms of maintaining data integrity, backup of the data, analysis of the data etc.
Cryptography does help in tackling the problem upto a great extent. If there is a way to encrypt data, there is always a way to decrypt the same using other platforms and code. This growing and multiplying technology has both pros and cons. Both ends need equal attention to manage the process.