Based on miniature Linear CMOS Imaging Technology from Symbol Technologies, the Secure Digital Scan Card 3E scans all popular linear bar code symbologies and uses only 57mA of power during scanning.  The SocketScan keyboard software sends decoded data to any Windows or Palm application as virtual keystrokes, so they appear as if you had taken the time to type them yourself.  You'll certainly increase productivity and maximize your scanning time since using a bar code scanner is 50 times faster and 10,000 times more accurate than manual data entry.  Simply plug the card into your PDA, launch the included SocketScan software, and scan for hours without having to recharge or replace your PDA's batteries.  Its's hard to believe that the Secure Digital Scan Card 3E weighs only .26 oz. and is about as long as two quarters placed side by side.  It doesn't matter if you scan for an hour or all day, because you won't feel a thing either way.