People are going bonkers... some shoot up theaters, some people are installing rare earth magnets under their skin without painkillers or anesthesia. The implant allows a person to feel electromagnetic fields: a
microwave oven in their kitchen, a subway passing beneath the ground,
or high tension power lines overhead.
The moniker for their working unit is Grindhouse Wetwares. Computers are hardware. Apps are software. Humans are wetware.
http://www.theverge.com/2012/8/8/3177438/cyborg-america-biohackers-grinders-body-hackers
An excerpt: As an example of how that might work, Cannon showed me a small device he
and Sarver created called the Bottlenose. It’s a rectangle of black
metal about half the size of a pack of cigarettes that slips over your
finger. Named after the echolocation used by dolphins, it sends out an
electromagnetic pulse and measures the time it takes to bounce back.
Cannon slips it over his finger and closes his eyes. "I can kind of
sweep the room and get this picture of where things are." He twirls
around the half empty basement, eyes closed, then stops, pointing
directly at my chest. "The magnet in my finger is extremely sensitive to
these waves. So the Bottlenose can tell me the shape of things around
me and how far away they are."