Overhead Work Space! Looking at a mobile device, a tablet with a square credit card reader, for an employee to use while people pay for their purchases. Paying with a credit card, the employee slides the card through the credit card reader and emails the customer their receipt. Very mobile, very electronic, great for outdoor selling, indoor selling and adding extra cashiers in a limited space. The feet of other customers can be seen, as an overhead view of the tablet, in a crowded outdoor market!