Interesting.
http://www.lockwiki.com/index.php/Abloy_Protec
http://www.lockwiki.com/index.php/Abloy_Protec
The Protec is a disc-detainer lock made by Abloy. The Protec uses nine or eleven discs that interface with a sidebar. One of the main features of the Protec is a "Disc Blocking System" that locks discs in place and makes various forms of attack more difficult.
The Protec is considered by many to be one of the best mechanical locks on the market. Videos of certain flaws and defeats have been shown on the Internet, but none have been publicly verified by a reputable source.
The Protec is the latest in the Abloy disc-detainer line, succeeding the Abloy Exec.