(19)

(11)

EP 0 673 534 A1

(12)

(43) Date of publication: 27.09.1995 Bulletin 1995/39 (21) Application number: 93924441.0 (22) Date of filing: 05.11.1993

(51) International Patent Classification (IPC):  A63F 7/ 02( . ) G06F 21/ 20( . ) G07C 9/ 00( . ) G07F 9/ 02( . ) G06F 21/ 00( . ) G06K 9/ 00( . ) G07F 7/ 10( . ) G07F 17/ 32( . ) (86) International application number: PCT/AU1993/000576 (87) International publication number: WO 1994/010658 (11.05.1994 Gazette 1994/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.11.1992 AU 1992PL05700 (71) Applicant: COMS21 LIMITED Mitchell, ACT 2911 (AU)	(72) Inventor: GREEN, Graeme, Allan Mitchell, ACT 2911 (AU) (74) Representative: Fyles, Julie Marie  William Jones, The Crescent, 54 Blossom Street York YO2 2AP York YO2 2AP (GB)