Abstract: Systems and methods of defending and/or guarding against inadvertent actuation of a virtual button upon a touch sensitive screen and/or device. A virtual button may be a touch sensor, set of touch sensors and/or touch areas upon a touch screen—the actuation of which may be associated with the execution of a process. In one embodiment, a virtual button may comprise a first touch area and a second guarding area. Certain touches and other conditions within the first touch area and/or second guarding area may be interpreted by the device as either intentional or inadvertent. If the touches are interpreted as inadvertent, then the process associated with the virtual button may be suppressed.

Abstract: An intrinsically safe network switch (200) includes five electronically isolated ports, four for connections in hazardous areas (206-1, 206-2, 206-3, 206-4) and one for receiving an unsafe Ethernet input (204). The device may use 10/100 mbps Ethernet cables and connectors and provides speed and activity LED indicators for each port. The device may be din rail-mountable, wall mountable, or desk mountable, and includes an integral heat sink for cool operation. The device incorporates internal barriers and isolated circuitry to guarantee safety and high-integrity signals with resistance to ambient EMI/RFI radiation. This network switch (200) could be any Ethernet communication devices such as hub, managed or unmanaged switch etc. Also, it could have total “n” number of ports (isolated or un-isolated) with 1 port for safe area and “n?1” port of hazardous area. The number of ports for safe and hazardous area can be varied to meet specific application requirements.

Abstract: An intrinsically safe network switch (200) includes five electronically isolated ports, four for connections in hazardous areas (206-1, 206-2, 206-3, 206-4) and one for receiving an unsafe Ethernet input (204). The device may use 10/100 mbps Ethernet cables and connectors and provides speed and activity LED indicators for each port. The device may be din rail-mountable, wall mountable, or desk mountable, and includes an integral heat sink for cool operation. The device incorporates internal barriers and isolated circuitry to guarantee safety and high-integrity signals with resistance to ambient EMI/RFI radiation. This network switch (200) could be any Ethernet communication devices such as hub, managed or unmanaged switch etc. Also, it could have total “n” number of ports (isolated or un-isolated) with 1 port for safe area and “n?1” port of hazardous area. The number of ports for safe and hazardous area can be varied to meet specific application requirements.