My dog likes to swim. Will that damage the key for the PlexiDor Electronic? The keys for the PlexiDor Electronic are water proof and will not be damaged by the dog going for a swim. The collar keys work with an RFID chip and come in two versions – both water proof. There is a standard key that has a 12″ range from the door, and a long range key with a 17″ range from they door. The latter is great if the dog likes rushing in and out of the house. Besides being water proof, the keys are battery free and shock proof, and they stay on the dog’s collar. They also work with underground fencing and do not interfere with home security systems.