Methods and devices provide mode switching in order to secure cash handling devices. A cash handling device allows a first selection to be input in order to request an exchange transaction. Currency may be inserted into the cash handling device. A display may prompt a user to identify one or more requested denominations of currency. A user may then identify one or more of the requested denominations for the exchange transaction. Elapsed time may be counted after prompting the user to identify denominations. If the elapsed time exceeds a timeout threshold, the transaction may be switched from an exchange transaction to a deposit transaction and the inserted currency may be credited as a deposit into an account. Otherwise, the exchange transaction may proceed and the currency may be provided in the requested denomination.