Barcode scanner has made the cash payment procedure so simple. Just the other day I visited the mall to buy some household items. At the counter they just rubbed the bar code scanner on the items I bought. And came up with the amount payable in an instant. No counting, no recounting, no chance of over-charging or under-charging. Visit http://www.pointofsalecomponents.com for a better idea. You can also find useful stuff on Cash Drawer, and Touch Monitor etc.