Portable prison cell

Small enough to fit in the palm of a Human hand, when thrown on the floor or the ground, the 'portable prison cell generates a force field around its "prisoner". Jack Harkness used the portable prison cell to trap the Sex Gas. Deprived of a body to contain it, the gas soldified into inert dust. (TW: Day One)


 * Visually, the force field generated by the portable prison cell resembles that of Jack's tractor beam technology.