With the User Input request API, customers will be prompted to enter the required additional data on the terminal. **Use cases** - In a restaurant setting, the POS application can prompt the waiter’s payment device to request an order number. The waiter enters the order number directly on the terminal, which is sent back to the POS application. This enables the payment amount to be processed for the specified order, reducing the need for the waiter to make multiple trips between the cash counter and the table.