There has been countless times where a product has been scanned at the register (amongst many other products in one purchase) and it has been easily missed and the product has been 'given away' SO many of my suppliers continue to change barcodes with no warning and there are times we are in a hurry and miss products not scanning - I have lost a lot of money because of just a simple feature such as a warning come up on the POS to prevent you from scanning any more products would be the BEST improvement on the POS.
