A couple more for you guys, I ran short on time today. Hope these work out alright.
A key wound, hand held device that fires a wedge into the door jamb keeping it firmly shut. The only way to open the door would be to successfully force it open.
An upgrade to the Door Stop device, this fires a projectile into the lock, essentially disabling it permanently. This action results in a loud noise which may alert any creatures in the vicinity.