Barcode scanners must be keyboard wedge scanners in design - i.e. it simulates the action of entering data via a keyboard – though connection, can, of course, be vi a USB port or wirelessly.
If possible, we recommend purchasing a scanner that can be programmed with an F9 prefix (i.e. when you scan a barcode, an F9 is appended to the start of the barcode information before it is sent to EVE) - as then EVE will set focus to the Barcode field on the Invoice automatic ally.
Metrologic Voyager scanners – principally the MS9520/40 VoyagerCG - are used by many centres. You can see more on these at www.metrologic.com