(19)

(11)

EP 0 811 212 A1

(12)

(43) Date of publication: 10.12.1997 Bulletin 1997/50 (21) Application number: 96901078.0 (22) Date of filing: 30.01.1996

(51) International Patent Classification (IPC):  G08B 13/ 14( . ) (86) International application number: PCT/GB1996/000196 (87) International publication number: WO 1996/026510 (29.08.1996 Gazette 1996/39)

(84) Designated Contracting States: DE ES FR IE IT NL SE (30) Priority: 24.02.1995 GB 19950003737 27.07.1995 GB 19950015441 (71) Applicant: Compusafe International Ltd. Windsor, Berkshire SL4 3BZ (GB)	(72) Inventors: McCART, Patrick Berkshire SL1 2BW (GB) CAMERON, Stephen Buckinghamshire HP14 3JD (GB) HIGGINS, Donal Buckinghamshire SL4 6NJ (GB) THOMPSON, Samuel Berkshire FL6 (GB) (74) Representative: Meddle, Alan Leonard, et al  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 80801 München 80801 München (DE)