Access to your info written all over your face

Editor's note: Facial recognition, iris scanning and fingerprint verification, scenarios once only seen in science fiction and spy movies, have become part of people's daily lives with the advances of information technology. ThePaper.cn comments:

While enjoying the convenience provided by these applications, a person has to give away his or her unique biological information to other parties, once for all in many cases.

This raises the questions to what extent should personal bio-information be protected by the law and what limits should be put on its use, and how should it be dealt with after the contract relations between its providers and users expire.