Parking technology has finally caught up to our on-the-go culture: pay without paying attention. Researchers have built a device that does for parking lots what radio transponders do for highway tolls. You park, it keeps track.
The near field communications (NFC) system, dubbed Viatag, consists of 0.5 inch by 4-inch RFID windshield tags, parking lot transceivers that read tags, and a central database. The windshield tag signals the parking transceiver as you're entering and exiting a parking lot. A central database tallies your time in the lot and debits your account accordingly.
The tag is unobtrusive compared with bulky highway toll transponders. This is because it's a passive RFID tag--no batteries. Instead it draws power through the air--from radio waves sent by the transceivers.… Read more