Depending on the machine, the player can insert cash or, in "ticket-in, ticket-out" machines, a paper ticket with a barcode, into a designated slot on the machine. The machine is then activated by the use of a lever or button (either physical or on a touchscreen), which activates reels that spin and cease to rearrange the symbols. If a player matches a winning mixture of symbols, the participant earns credits primarily based on the paytable. Classic symbols embody objects such as fruits, bells, and stylized fortunate sevens.