I also saw the pics of the water sensor, and Pat N. explained to us what the inner workings were, and frankly I was stunned by the effectiveness of it and why it did not go further. On the inside their was a microphone and a wireless card to send info to your wifi. The amazing thing was he told us that whenever a handle was turned on in the house it emits a signature sound which would be picked up by the mic, and you would know which faucet, shower, sink, etc. was on and using the most water. That had never been discussed before, and as Frank said there were prototypes out there and from what Pat said the City of Rancho Bernardo had something like 4 of them that they were testing, and now (POOF) up in a cloud of smoke.