Till systems have changed since I had a little cash register as a child. These days they usually run on a tablet. They may include an integral card payment system or have a small palm sized device attached. The local Clover salesman did a good job in the area and we help clients to keep their VAT and stock records using the software. It integrates into Xero and other bookkeeping apps to save time and minimise errors by typing numbers from one system into another.