Coin-rolling related scams are a collection of scams involving coin wrappers (rolls of coins). The scammer will roll coins of lesser value or slugs of no value, or less than the correct number of coins in a roll, then exchange them at a bank or retail outlet for cash. To prevent these problems, many banks will require people turning in coins to have an account, and will debit the customer's account in the event of a shorted roll. Some banks also have machines to count coins.