Sonic Maps Android -

That’s when his son, Marcus, a robotics engineer in Seattle, installed EchoLocate on an old Android phone. “It’s not GPS, Dad,” Marcus explained over the phone. “GPS tells you where you are . This tells you where you’re going .”

He was crossing the small park near the library. The phone’s soundscape was calm—the soft shush of grass, the metallic ring of the jungle gym. But suddenly, the river sound returned. Not the storm drain. A real, deep, subterranean river. sonic maps android

The app was called , and its tagline was: Hear the world you cannot see. That’s when his son, Marcus, a robotics engineer

“Tap the screen twice,” Marcus had said. That’s when his son