Standards for a currency validator - Dispensing device

A currency validator must: 1. Validate only United States currency up to values of one hundred dollars; 2. Have an antipullback mechanism and other anticheat devices that prevent cheating of the bill acceptor by mechanical means; 3. Reject invalid and all known manipulations of United States currency; 4. Have a currency stacker box or drop box; and 5. If a malfunction occurs, automatically discontinue accepting or validating currency.