One of the principal focuses of Wincor Nixdorf’s strategy is the development of innovative technologies to ensure that processes in the traditional self-service field can be carried out as smoothly and efficiently as possible. Among the innovation highlights is so-called Intelligent Deposit, which includes cash-recycling systems that redispense banknotes after an authenticity check. In order to ensure effective handling, it is essential that metal objects such as paper clips are recognized early on during processing. Using electromagnetic field simulations, a metal detection module in the cash recycling system’s banknote input tray can recognize foreign metal objects and issue an immediate warning. This is just one way in which Wincor Nixdorf is helping retail banks to provide fast and customer-friendly cash transactions. Wincor Nixdorf’s metal detection system is an important step forward in assuring the reliability, processing speed and product quality of cash recycling machines. The system was developed in collaboration with the Fraunhofer Institute for the Non-Destructive Testing of Materials in Saarbrücken.