A cash drawer is a compartment usually located underneath a cash register or other Point-of-Sale (POS) device which can be opened or closed via interaction with the register’s ‘No Sale’ button, electronically, or manually with a coded key set.
The drawer itself is used to store cash, coins, credit card receipts, physical vouchers, and other valuables that are accrued over the course of daily business. Inside of the drawer, cash trays (normally made of plastic) can often be inserted/removed to facilitate cashier cash-out, rotation of staff, and end-of-day closing activities.
Cash drawers are predominantly used in retail and hospitality settings. Nearly anywhere that cash registers are to be found, cash drawers most often accompany them.