On land, we have Google Maps. In the air, drones use RTK GPS. Underwater? GPS signals are blocked by water. Without expensive acoustic positioning systems (USBL), most consumer ROV pilots are flying blind. This is where the concept of comes into play.
But there is a persistent problem:
"Hacking," in this context, does not mean breaking into military satellites. It means creatively modifying open-source software, repurposing Android sensors, and fusing data streams to generate a real-time 2D map of your underwater environment. hack map rov android