Anti-snap, anti-drill, anti-bump — what these features actually mean and when you need them.
'High security' gets thrown around loosely. Here's what actually matters.
Anti-snap
A sacrificial section snaps off cleanly, leaving the working part of the cylinder intact.
Anti-drill
Hardened steel inserts stop a common drill dead.
Anti-bump
Specially profiled pins defeat the 'bump key' attack.
Registered keys
Copies can only be cut by authorised locksmiths, on presentation of a key card.