(19)

(11)

EP 0 992 012 A1

(12)

(43) Date of publication: 12.04.2000 Bulletin 2000/15 (21) Application number: 98924920.6 (22) Date of filing: 27.05.1998

(51) International Patent Classification (IPC)7: G06F 17/60 (86) International application number: PCT/US9810/788 (87) International publication number: WO 9859/308 (30.12.1998 Gazette 1998/52)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 30.05.1997 US 866139 30.05.1997 US 866140 30.05.1997 US 865691 (71) Applicant: Capital Security Systems, Inc. Chicago, IL 60660 (US)	(72) Inventors: GUSTIN, Robin, Haley Chicago, IL 60660 (US) LIVINGSTON, Troy, W. Northbrook, IL 60062 (US) PARK, Namsoo Schaumburg, IL 60194 (US) (74) Representative: HOFFMANN - EITLE  Patent- und RechtsanwälteArabellastrasse 4 81925 München 81925 München (DE)