Perhaps some of our readers might be able to figure it out.
The concept is simple; an alarm for prostitutes. The technology, however, is rather cutting edge. It involves inserting a GPS unit into the quintessential streetwalker accoutrement: platform shoes.
If things start to turn bad during a trick, the sex worker merely pushes a button on her shoes and an audible alarm will sound. In addition a distress signal with the exact GPS coordinates will be sent over amateur radio frequencies to alert the police (thus combining the world’s oldest profession with the world’s most modern technology).
Fascinating. I’m sure pimps will love this; they could sign on to their laptops and know the exact location of all their girls. Or customers could plug into the grid as well.
As for travelers… a GPS system built into hiking boots or your summer Birkenstocks probably has some practical application, right?