Abstract: In an example embodiment, a secure display device that includes hardware that can be positioned between a personal computer or a central processing unit and a display, such as a flat panel display. Display data from the personal computer or the central processing unit to the flat panel display is transmitted through the security display device.

Abstract: A tamper responsive sensor comprising: a carrier printed circuit board (“carrier PCB”), holding a mesh of one or more electrically conductive tracks, a pressure or force sensitive switch contact arranged on top of the carrier PCB and having first and second electrical contact connections, tamper detecting circuitry arranged at the carrier PCB and being powered via two electrical power lines and connected to one or more electrically conductive signal lines, wherein one of said power lines or one of said signal lines is electrically connected to the tamper detecting circuitry via a first tamper line holding the switch contact, and wherein one of said power lines or one of said signal lines is electrically connected to the tamper detecting circuitry via a second tamper line holding a conductive track of the carrier PCB mesh.

Abstract: In an example embodiment, a secure display device that includes hardware that can be positioned between a personal computer or a central processing unit and a display, such as a flat panel display. Display data from the personal computer or the central processing unit to the flat panel display is transmitted through the security display device.

Abstract: A tamper responsive sensor comprising: a carrier printed circuit board (“carrier PCB”), holding a mesh of one or more electrically conductive tracks, a pressure or force sensitive switch contact arranged on top of the carrier PCB and having first and second electrical contact connections, tamper detecting circuitry arranged at the carrier PCB and being powered via two electrical power lines and connected to one or more electrically conductive signal lines, wherein one of said power lines or one of said signal lines is electrically connected to the tamper detecting circuitry via a first tamper line holding the switch contact, and wherein one of said power lines or one of said signal lines is electrically connected to the tamper detecting circuitry via a second tamper line holding a conductive track of the carrier PCB mesh.

Abstract: There is provided a tamper responsive sensor comprising a carrier printed circuit board, carrier PCB, holding a mesh of one or more electrically conductive tracks. The sensor also holds a pressure or force sensitive switch contact arranged on top of the carrier PCB, which contact has first and second electrical contact connections. Furthermore, the sensor has a tamper detecting circuitry arranged at the carrier PCB, which circuitry is powered via two electrical power lines, and which circuitry is connected to one or more electrically conductive signal lines.

Abstract: There is provided a security module for protecting circuit components from unauthorized access. The security module comprises a base printed circuit board, base PCB, for supporting circuit components to be protected, a frame printed circuit board, frame PCB, where the frame PCB is secured on top of the base PCB and defining a protective space for circuit components supported by the base PCB, and a lid printed circuit board, lid PCB, which is secured on top of the frame PCB, thereby providing a top closure to the protective space. First and third meshes are provided in the frame PCB, and a second mesh is provided in the lid PCB. The first, second and third meshes have a number of electrically conductive tracks, and one or more tamper detection paths are formed comprising a serial connection of one track from each of the first, second and third meshes.

Abstract: There is provided a tamper responsive sensor comprising a carrier printed circuit board, carrier PCB, holding a mesh of one or more electrically conductive tracks. The sensor also holds a pressure or force sensitive switch contact arranged on top of the carrier PCB, which contact has first and second electrical contact connections. Furthermore, the sensor has a tamper detecting circuitry arranged at the carrier PCB, which circuitry is powered via two electrical power lines, and which circuitry is connected to one or more electrically conductive signal lines.

Abstract: There is provided a security module for protecting circuit components from unauthorized access. The security module comprises a base printed circuit board, base PCB, for supporting circuit components to be protected, a frame printed circuit board, frame PCB, where the frame PCB is secured on top of the base PCB and defining a protective space for circuit components supported by the base PCB, and a lid printed circuit board, lid PCB, which is secured on top of the frame PCB, thereby providing a top closure to the protective space. First and third meshes are provided in the frame PCB, and a second mesh is provided in the lid PCB. The first, second and third meshes have a number of electrically conductive tracks, and one or more tamper detection paths are formed comprising a serial connection of one track from each of the first, second and third meshes.