Abstract: An actuated castellation plate can be arranged across a length of a currency passageway of a currency acceptor assembly and configured in an open state. Pressure from an attempted string fraud, such as pulling in reverse a bill across the castellation plate, can actuate the castellation plate to a closed state, obstructing the currency passageway so that the bait bill cannot be retrieved. Embodiments can include a currency acceptor including a currency passageway, mounting assembly, currency storage assembly having an entrance, the currency passageway being arranged to guide a currency denomination to the entrance of the currency storage assembly, and an actuated castellation plate including an array of teeth coupled to a baseplate including a receptacle and two opposing mounting ends, the castellation plate being configured at the entrance of the cashbox assembly to transfer between an open and closed state. Related apparatus, systems, techniques, and articles are also described.

Abstract: An actuated castellation plate can be arranged across a length of a currency passageway of a currency acceptor assembly and configured in an open state. Pressure from an attempted string fraud, such as pulling in reverse a bill across the castellation plate, can actuate the castellation plate to a closed state, obstructing the currency passageway so that the bait bill cannot be retrieved. Embodiments can include a currency acceptor including a currency passageway, mounting assembly, currency storage assembly having an entrance, the currency passageway being arranged to guide a currency denomination to the entrance of the currency storage assembly, and an actuated castellation plate including an array of teeth coupled to a baseplate including a receptacle and two opposing mounting ends, the castellation plate being configured at the entrance of the cashbox assembly to transfer between an open and closed state. Related apparatus, systems, techniques, and articles are also described.