A method for receiving and executing a request from an electronic communications device in a point-of-sale location, the device configured to receive, from a device reader, magnetic signature data from a magnetic field produced by the device reader and wirelessly receiving a reader unique identifier from the device reader. The device configured to communicate the magnetic signature data and unique identifier to a backend service as reader identifying data together with customer credentials. The backend service configured to match customer credentials with a customer database, and match reader identifying data to a reader database to verify the reader identify; the backend service configured to use verified reader identity to identify order data received from a terminal and to pass order data to a payment provider for executing payment.