eric schmiedl photography

The Drumm Geminy shield is a high-security secondary locking device designed to protect against all kinds of entry as well as vandalism. Distributed in the US by Han Fey Lock Technologies, the pin-in-pin design of this lock uses sophisticated anti-pick pins that have so far withstood the best efforts of the locksport community to pick them.

Rather than interfacing directly with the bolt, the Drumm Geminy prevents the attacker from getting access to a normal lock cylinder mounted in the door. (In this case, an Abloy Protec.)

The Geminy Shield is unlocked by means of a pan-shaped key which contains a set of stepped projections that depress the inner and outer pins to different depths.