PS2 barcode scanners, or keyboard wedge scanner, allow scanned data to appear on a computer screen as if it was typed directly on a keyboard. Keyboard wedge barcode scanners connect to the computer keyboard port. One caveat is that PS2 barcode data can't be changed prior to displaying onscreen. Similar to barcode scanners, keyboard wedge scanners read both1D and 2D codes. Browse Barcode Discount's selection below.