Theft protection for electrically-powered articles

摘要: A system and method for protecting an electrically-powered article, particularly a computer such as personal computer, from theft by rendering it effectively useless to anybody but the rightful user/owner. The includes power disruption indicator (21) which electrical must be applied even when is shut-down (switched off at switch 12). continuous normally provided means of mains-supplied unit (10). In event mains supply discontinuities longer than predetermined short time period, would case if equipment stolen, subsequent start-up prevented until protection password potential user. separate source, capacitor (20), shorter periods, moving within premises, thus obviate need enter upon occasions.