Not only will this encourage use, but it also increases security with a kick-proof design.
PX-2 - Large Power Pet Door for Door and Wall Installations Because traditional doggie doors leave your home vulnerable to intruders, stray animals, and weather, this state-of-the-art pet door opens only with the sensor from the coordinating High Tech Pet Microsonic Collar. The automatic deadlock keeps it extra-secure, and the custom settings give you total control. The digitally coded signal emitted from your pet's ultrasonic transmitter collar allows the Power Pet to work almost like magic, opening only when your pet is on a direct approach. Their animal friends are politely asked to stay out.