Abstract: Systems and methods for secured electronic transaction execution are described. Embodiments include receiving, from a client device via a communications network, electronic transaction information for a transaction; transmitting, to a device of the third-party agent, a request for a transaction instruction for processing of the transaction by a processing device; receiving, from the device of the third-party agent, the transaction instruction for the transaction; after receipt of the transaction instruction, generating a validation code based at least in part on the transaction instruction; store, in a secured memory location of the secured memory device, the validation code; transmitting, to the client device via the communications network, a request for authenticating the transaction instruction; receive, from the client device, the validation code; and causing transmission of the transaction instruction to the processing device.

Abstract: An adapter device for use with a data-input-type keyboard comprises a housing defining a chamber receiving the keyboard. An upper housing panel is provided with a first opening at least coextensive with all keys on said keyboard. A plate is hingedly secured to the upper panel so that the plate covers the first opening in an access restriction or limited use position of the plate. The plate is provided with an opening at least coextensive with a predetermined set of keys, fewer than all of the keys of the keyboard. The device further comprises an alignment component for locating the housing relative to the keyboard so that the keyboard occupies a predetermined position relative to the housing and so that the second predetermined set of keys is aligned with the opening.