Sentex keypads have a mastercode!

Sentex are a worldwide brand of electronic entry systems. It has been discovered that there is a master code across many of their products allowing anyone to enter who knows the code. This raises the question of other access control systems, have yours been checked and tested?

It has a master key:

 

Here's a fun little tip: You can open most Sentex key pad-access doors by typing in the following code: more...