A digital pen system comprising a pen 8 adapted to mark a medium 2 and a sensor 12 arranged to determine the position on the medium 2 of a mark made by the pen 8, the system being arranged to identify a plurality of different areas 500 on the medium 2 and being further arranged to authenticate a user in dependence upon authentication data input by the user, the authentication data having a value dependent upon the order in which a group of the plurality of different areas 500 of the medium 2 are marked by the pen 8.
申请公布号
WO2005103858(A1)
申请公布日期
2005.11.03
申请号
WO2005EP51795
申请日期
2005.04.22
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.;ALBARRAN, MANUEL ANGEL;RUIZ, CARLES;MACKENZIE, ANDREW
发明人
ALBARRAN, MANUEL ANGEL;RUIZ, CARLES;MACKENZIE, ANDREW