QR codes–square, dot-matrix variants of the venerable UPC–are becoming an increasingly popular way to share information such as URLs, contact details, GPS coordinates, and calendar events. The idea is ...

VINs can also tell you things like what kind of airbags are present in the car, what kind of restraint system it has (think seatbelts) and the year of the vehicle. Basically, the VIN offers a quick ...

While many of us have banished land line telephones from our houses, there are still quite a few people who utilize POTS lines today. These analog phone systems use Dual Tone Multi Frequency (DTMF) ...