A secure peripheral connecting device (20, 50, 55, 60, 70) comprising: at least one digital computer interface capable of interfacing the device with a coupled computer; at least one peripheral device interface (18, 42, 43) capable of interfacing the device with a user peripheral device; a user momentary switch; an indicator element; switches (9a-9c); and a controller; wherein user activation of said user switch is capable of causing said controller to activate said switches (9a-9c) for setting the device in an operational state by: enabling transfer of data to and from said user peripheral device and said coupled computer; and turning on said indicator element; and wherein said controller is capable of automatically activating said switches (9a-9c) for setting the device in a secured state by: disabling transfer of data to and from said user peripheral device and said coupled computer; and changing the state of said indicator element, characterised in that said controller is capable of maintaining the device in said operational state in a timed mode where the operational state is maintained for a predefined time interval after said user momentary switch was activated; and wherein, when the secure peripheral connecting device is in operational state, if the user presses the user momentary switch momentarily for a short press of less than 2.5 seconds, the device will change state to said secure state immediately, and if the user presses the push-button for more than 2.5 seconds, the time interval timer will restart and extend the operational state. at least one digital computer interface capable of interfacing the device with a coupled computer; at least one peripheral device interface (18, 42, 43) capable of interfacing the device with a user peripheral device; a user momentary switch; an indicator element; switches (9a-9c); and a controller; wherein user activation of said user switch is capable of causing said controller to activate said switches (9a-9c) for setting the device in an operational state by: enabling transfer of data to and from said user peripheral device and said coupled computer; and turning on said indicator element; enabling transfer of data to and from said user peripheral device and said coupled computer; and turning on said indicator element; and wherein said controller is capable of automatically activating said switches (9a-9c) for setting the device in a secured state by: disabling transfer of data to and from said user peripheral device and said coupled computer; and changing the state of said indicator element, disabling transfer of data to and from said user peripheral device and said coupled computer; and changing the state of said indicator element, characterised in that said controller is capable of maintaining the device in said operational state in a timed mode where the operational state is maintained for a predefined time interval after said user momentary switch was activated; and wherein, when the secure peripheral connecting device is in operational state, if the user presses the user momentary switch momentarily for a short press of less than 2.5 seconds, the device will change state to said secure state immediately, and if the user presses the push-button for more than 2.5 seconds, the time interval timer will restart and extend the operational state. if the user presses the user momentary switch momentarily for a short press of less than 2.5 seconds, the device will change state to said secure state immediately, and if the user presses the push-button for more than 2.5 seconds, the time interval timer will restart and extend the operational state.