Systems and methods for secure wireless payment transactions when a wireless network is unavailable

A payment authority server, comprising:

• at least one processor;
• and
• at least one memory communicatively coupled with the at least one processor, the at least one memory comprising executable code that, when executed by the at least one processor, causes the at least one processor to:
• receive at the payment authority server, from a point of sale terminal, a payment code associated with a state of network disconnectivity at a mobile device;
• authorize a transaction associated with the point of sale terminal in response to a determination that a set of payment codes stored by the payment authority server contains the payment code received from the point of sale terminal, wherein the set of payment codes stored by the payment authority server is associated with the state of network disconnectivity at the mobile device;
• and
• invalidate the received payment code at the payment authority server for future transactions.

A method for conducting a transaction, comprising:

• receiving a request from a user for a payment code at a mobile device;
• determining that a wireless network is unavailable to the mobile device;
• retrieving the payment code from a digital lockbox of the mobile device in response to the determination that the wireless network is unavailable, the payment code associated with a state of disconnectivity between the mobile device and the wireless network;
• providing the retrieved payment code to a point of sale terminal to authorize the transaction;
• and
• communicating with a payment authority server to receive a replacement payment code for the digital lockbox in response to the mobile device reconnecting to the wireless network.