The Demise go Crypto Currencies in the long run is inevitable. In fact in the early years I was a believer thinking an electronic universal medium of exchange was the future….
Utilization of fire sprinklers and showers for sovereign or foreign surveillance. As water transmits sound a sound pattern differentiation system like a submarine uses to give tango solutions. System plugs into uthe fire sprinkler network and sort the sounds from each room by distance and frequency. Given to the NSA or CIA it would provide options for surveillance not answered by Eagle Eye.