Abstract: A system and method for processing a secure financial transaction using a Commercial off-the-shelf (COTS) or Internet of Things (IoT) device is provided. The method comprises requesting a Trusted Application Manager (TAM) to verify the COTS/IoT device identity and executing an application on a COTS/IoT device. Upon verification, TAM installs a Trusted Application (TA) in a Trusted Execution Environment (TEE) of the COTS/IoT Device. Further, initiating a resonance response when a tag is within a predetermined distance from the COTS/IoT device with TA installed, and receive the tag information from the tag. Finally, processing a secure financial transaction using the COTS/IoT device based on the received tag information by accessing the TEE. The COTS/IoT device includes a distributed ledger, and which comprises information corresponding to at least one of COTS/IoT device ownership, manufacture, and usage information.