Originally posted by marwash22
They're using bending to manipulate the wires.there are no devices on Lin's arms or wrists that would retract the wires... also, some sort of spring loaded system wouldn't allow her or her officers to wrap the wires around people as seen when Lin saves Korra or in the first episode when they wrap up Korra and Naga. Also, in the second episode, Lin unlocks Korra's restraints with bending.
They could move their fingers in a certain way to retract them: engages the reverse spring or some shizer. They also are covered in armor that is plenty big to house some gadgets.