TY - JOUR A1 - Schuba, Marko A1 - Gerstenberger, Volker A1 - Lahaije, Paul T1 - Internet ID – Flexible Reuse of Mobile Phone Authentication Security for Service Access / Schuba, Marko ; Gerstenberger, Volker, ; Lahaije, Paul Y1 - 2004 N1 - Nordsec 2004, Helsinki ; Nordic Workshop on Secure IT-systems <9, 2004> SP - 1 EP - 7 ER -