Emergency hand actuator
Emergency hand actuators were small devices used to open doors aboard Starfleet vessels in the event of  loss.

They were stored at convenient locations near turbolifts, Jefferies tubes, and other vital areas. Use of the device involved attaching it to either side of the door, then pulling the door open. (; ; )

Seven of Nine took such an emergency hand actuator from behind a panel to gain access to a Jefferies tube where a chroniton torpedo crashed inside the hull of Voyager. ()

Captain Janeway also used such an actuator to gain access to Deflector Control. ()

Security technology