The engineer who pioneered speech recognition now wants to use AI to track your toaster. Meet Sense, the buzzy startup that's raised $50 million to monitor every appliance in your home.

· Every electronic device in your home sucks down power in a slightly different and discernible way. 
· A pioneer in speech recognition, Mike Phillips cofounded Sense, a buzzy startup that makes a device that's able to tell those different electrical signals apart.
· The new technology — which relies on machine learning,...