skold wrote:If a remote can create a signal, the signal can be replicated..
Probably very easily with the right equipment.
It's not always that easy (opening remote control locks). Of course the signal can be replicated, but it is a different question if the same code will work.
Although I have zero knowledge of this specific lock, I think that un-replicatable-by-recording-IR-signal (by current standards) key&lock can be made and is possible already out there. It's all a matter of cryptography.
Probably a simple challenge-response based key&lock pair would make it computationally infeasible to calcuate the correct code.
It just needs proper implementing (the lock can for example be limited 2tries/sec and lock it self for 5mins after 10 unsuccesful auth attempts within a short period of time). The key may also be protected so it does not respond to signals a button is pressed on it. This way an attacker can not obtain valid challenge-reponse pairs while the lock owner is shopping etc.
This post only appiles to the IR communication. Of course one could use a rotary tool to bypass the lock. Alternatively he/she may steal the key, but this was not the point.