I used several symbol scanners at my last job,
the nicest one looked like a star trek phaser, but was called the cobra.
(they had on called the phaser, but it was portable and more expensive)
Ir plugged into a USBport, and it had a driver so you could set it up to emulate a keyboard.
You just click on the test box where you want the number to go and scan it, and the driver
types the keys to put the number in for you, no special software needed.
Caladin-