WIEGAND EFFECT
Wednesday, 19 January 2011
The original patent of Wiegand was first awarded by United States Patent & Trademark office in 1974 on June 25, 1974 for its inventor John Richard Wiegand. Wiegand effect, named owing to its Inventor, a German scientist John Richard Wiegand. The Wiegand effect is the non linear magnetic effect produced in specially hardened and annealed (heat treated)
- Published in Access Controls, Technology, Turnstiles
GENERAL TECHNICAL TERMS
Saturday, 20 November 2010
Anti pass-back Where the turnstile provides a return signal to the Access Control System to signal that user A has entered or exited the building. If user A then passes his proximity card to user B the access control system will know that this entry is potentially fraudulent and prevent access/egress. Anti-piggybacking Where methods have
- Published in Access Controls, Mobile, Networking, Technology, Turnstiles