Poseidon Swimming System
Now this is damn cool. The Poseidon Swimming System is a computer imaging system used to detect when someone is drowning. Effectively, it tracks swimmers and sounds an alert to screens, sirens, pagers, etc. when a swimmer stops moving. How cool! This is an awesome application of imaging technology—a field that typically only receives publicity for its security implications.
You might also be surprised to hear that this product has been around for several years.