US Patent 11475427 Server for transaction handoff and completion employing ephemeral token

A server includes: a database that registers a payment instrument, associates the instrument with ephemeral tokens, and stores a payment token that associates the ephemeral tokens with the instrument in a record along with an identifier for a device; a communication circuit, that receives transaction details from a POS terminal, transmits one of the ephemeral tokens to the device, and receives the one of the ephemeral tokens from the POS terminal; and a code segment, that employs the payment token to access the identifier in the record, directs the communication circuit to send a push notification, and, upon execution of the proprietary application on the device, directs the communication circuit to transmit transaction details to the POS terminal and the device, receives transaction data from the device, completes the transaction, and directs the communication circuit to notify the POS terminal that the transaction is complete.