In April 2151, during a mission to a Suliban helix, Jonathan Archer used a device to reverse the polarity of any maglock within one hundred meters, causing the docked Suliban cell ships to scatter away from the helix. (ENT: "Broken Bow") Also in 2151, Starfleet officers aboard the NX-class starship Enterprise used a mag-lock to seal cabin E-14, Crewman Daniels' former quarters, and placed the device on the cabin's door. (ENT: "Cold Front") In 2269, Spock believed that the Taurean slumber chambers used a magnetized lock. (TAS: "The Lorelei Signal")