Abstract: A data entry device including a housing formed of at least two portions, data entry circuitry located within the housing, at least one case-open switch assembly operative to sense when the housing is opened and tamper indication circuitry operative to receive an input from the at least one case-open switch assembly and to provide an output indication of possible tampering with the data entry circuitry located within the housing. The at least one case-open switch assembly includes an arrangement of electrical contacts arranged on a base surface and a resiliently deformable conductive element, which defines a short circuit between at least some of the arrangement of electrical contacts only when the housing is closed.

Abstract: A data entry device including a housing formed of at least two portions, data entry circuitry located within the housing, at least one case-open switch assembly operative to sense when the housing is opened and tamper indication circuitry operative to receive an input from the at least one case-open switch assembly and to provide an output indication of possible tampering with the data entry circuitry located within the housing, the at least one case-open switch assembly including an arrangement of electrical contacts including at least first, second and third contacts and a displaceable conductive element, the tamper indication circuitry and the third contact together being operative such that when the third contact is short circuited to at least one of the first contact, the second contact and another contact, an output indication of possible tampering is provided.

Abstract: A data entry device including a housing formed of at least two portions, data entry circuitry located within the housing, at least one case-open switch assembly operative to sense when the housing is opened and tamper indication circuitry operative to receive an input from the at least one case-open switch assembly and to provide an output indication of possible tampering with the data entry circuitry located within the housing. The at least one case-open switch assembly includes an arrangement of electrical contacts arranged on a base surface and a resiliently deformable conductive element, which defines a short circuit between at least some of the arrangement of electrical contacts only when the housing is closed.

Abstract: A magnetic card reader including a magnetic head, located in a non-secured region, at least one signal path including at least first and second electrical conductors extending from the magnetic head in the non-secured region to a secured region, circuitry located within the secured region and receiving at least one signal output along at least one signal path, the circuitry located within the secured region including functionality ensuring that a voltage difference along the at least first and second electrical conductors is virtually zero, thereby obviating illicit information retrieval via tapping of the at least first and second conductors and analysis of voltage differences therebetween.

Abstract: A magnetic card reader including a magnetic head, located in a non-secured region, at least one signal path extending from the magnetic head in the non-secured region to a secured region, signal processing circuitry located within the secured region, an obscuring signal injector located within the secured region and an obscuring signal remover located within the secured region, for receiving a combination of at least one signal output and an obscuring signal and for providing an unobscured signal output, corresponding to the at least one signal output, to the signal processing circuitry.

Abstract: A data entry device including a housing including a top housing portion including key apertures, a plurality of data entry keys mounted in the housing to have data entry key depression travel paths in the housing, the plurality of data entry keys being associated with a substrate, which is disposed below the top housing portion and anti-tampering electrical conductors arranged between the top housing portion and the substrate thereby to prevent unauthorized access to the substrate.

Abstract: A magnetic card reader including a magnetic head, located in a non-secured region, at least one signal path including at least first and second electrical conductors extending from the magnetic head in the non-secured region to a secured region, circuitry located within the secured region and receiving at least one signal output along at least one signal path, the circuitry located within the secured region including functionality ensuring that a voltage difference along the at least first and second electrical conductors is virtually zero, thereby obviating illicit information retrieval via tapping of the at least first and second conductors and analysis of voltage differences therebetween.

Abstract: A magnetic card reader including a magnetic head, located in a non-secured region, at least one signal path extending from the magnetic head in the non-secured region to a secured region, signal processing circuitry located within the secured region, an obscuring signal injector located within the secured region and an obscuring signal remover located within the secured region, for receiving a combination of at least one signal output and an obscuring signal and for providing an unobscured signal output, corresponding to the at least one signal output, to the signal processing circuitry.

Abstract: A point of sale terminal that is capable of printing on a roll of paper is provided with a compartment defining an upper surface and an opposite lower surface, a left side and a right side between the upper and lower surfaces, and a rear surface between the upper and lower surfaces. The terminal also includes a display and a keypad disposed on the upper surface, and a printer with a paper roller and a printing mechanism for receiving and printing on the roll of paper. The printer is disposed within the compartment, and a door is provided in the lower surface of the compartment for insertion of the roll of paper. The compartment is provided with an exit for the paper adjacent the rear surface.

Abstract: A magnetic stripe reader assembly for a point of sale terminal is provided. In some embodiments, the magnetic stripe reader assembly includes a holder configured to retain a magnetic head within the terminal and restrict access to electronic components.