Systems and methods for alternative payment mechanism payments using ultra-wideband radio technology are disclosed. A method may include a payment terminal computer program executed by a payment terminal selecting a customer electronic device that is conducting the payment transaction with the payment terminal; communicating, via a payment terminal UWB radio to the selected customer electronic device, payment transaction details for the payment transaction comprising a merchant identifier and a transaction amount; receiving, from the selected customer electronic device via the payment terminal UWB radio, an APM payment message for an APM payment provider; communicating the APM payment message to the APM payment provider, wherein the APM payment provider is configured to decision the transaction based on the APM payment message; and receiving, from the APM payment provider, a payment confirmation for the payment transaction.