Click here for Wookieepedia's article on the Canon version of this subject.  This article covers the Legends version of this subject. 

OnALegendsArticleGoToCanon

MCI-100 magnacuffs were a model of magnacuffs produced by Locris Syndicated Securities. It used micro magnetic fields to lock their restraining bands in place. It also employed a fingerprint identification system which eliminated the need for keys and safeguarded against unauthorized duplication.

Sources

Notes and references