Ok, so this sounds like an interesting concept, certainly from a dive centre perspective. At least there'll be no more lying about your air consumption to the dive guide. The worrying thing though is it has it's own app store. There better not be any facebooking or twittering going on during the dives!!
"With the Aqwary Smart Console it is now easier than ever for divers to
connect, and share information about their air supply, location, and
more - on a local subaquatic network. Our underwater network is powered
by ultrasonic sound, and supports up to 70 divers within 100m range."