This page is a Stub, meant to be transcluded into Security Devices rather than viewed directly.
The first thought on biometrics might be: "Why don't we just hack the security database to get the profile and build our fake from that?" The problem there is hashing and salting — security databases don't include the original print, only data that can be used to validate a scan. Besides, cracking a lock is often an easier task than cracking the host that controls the lock.
Medical databases are a different story. Because they often need to be compared over time to diagnose medical issues, they tend to include the full data rather than only what's cryptographically useful. The higher the social stratum (and the higher the medical contract) a person has, the more likely they are to have more complete data in their medical profile. Of course, those hosts tend to be more secure, too.