(19)
(11) EP 0 466 763 A1

(12)

(43) Date of publication:
22.01.1992 Bulletin 1992/04

(21) Application number: 90905598.0

(22) Date of filing: 30.03.1990
(51) International Patent Classification (IPC): 
G06F 1/ 00( . )
G06F 21/ 00( . )
G06F 3/ 08( . )
G06F 21/ 20( . )
(86) International application number:
PCT/GB1990/000478
(87) International publication number:
WO 1990/012357 (18.10.1990 Gazette 1990/24)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB IT LI LU NL SE

(30) Priority: 01.04.1989 GB 19890007412

(71) Applicant: NIGHTHAWK ELECTRONICS LTD.
London WC2R 3AS (GB)

(72) Inventor:
  • MURRAY, Douglas
    Glasgow G4 0DT (GB)

(74) Representative: Brunner, Michael John, et al 
GILL JENNINGS & EVERY Broadgate House 7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB)

   


(54) COMPUTER SECURITY SYSTEM