What do you do if your cat often gets in a murdery mood and tries to bring dead, blood-dripping varmints into your house? Well, if you're Ben Hamm, you create an AI-powered cat door to lock out the furry boy when he tries to bring you a filthy meat present. One of the worst parts of pet ownership is leaving your dog or cat home alone. Hamm, a product manager at Amazon, says he spent months collecting thousands of images of his cat, Metric, entering and leaving his house to create the AI cat door, which he gave a talk about the automated cat door at Ignite Seattle last month. To create the door, Hamm says he attached an Arduino to a lock, mounted Amazon's DeepLens camera above the cat door, and fed over 23,000 images of his cat to Amazon's machine learning platform, SageMaker, to detect when Metric was coming in with prey.