Behind all the techno-jargon, Biometric bugs too dangerous for public? (ZDNet) is about biometric lock picking.
In the software world, if your system has a weakness, you can just fix the software, push out an update, and voila, all is well. If, however, your sensor hardware is buggy (i.e. the lock is easy to pick), you face the much more painful prospect of fixing/replacing each sensor.
Read the whole thing. The topic is very interesting from a technical point of view and does a good job of not overly hyping the issue.