A secure transaction system, computer program recording medium and method facilitate secure, in-person peer-to-peer transaction. A controller of the secure transaction system authenticates first and second parties of a transaction via respective first and second user devices. A financial trustworthiness of at least the second party is determined. The controller vouches for the financial trustworthiness of the second party to the first party via the first user device. The controller brokers an in-person transaction that comprises transfer of physical value from the first party to the second party. In response to receiving confirmation of the transfer to the physical value between the first and second parties, the controller adjusts first and second financial accounts respectively associated with the first and second parties to reflect the transfer.