I think there are some types of scanners that will behaves as a USB keyboard, so that when you scan, they type the number you just scanned. They would work. Some will store the scanned numbers in a file that you access via USB storage and copy/paste. Looking around on Amazon, it's not obvious what features the scanners have and they vary wildly in price.
We have a bluetooth HERO scanner that will scan the microchip into whatever field our cursor is in. It will even scan to the desktop screen.