Many people use the same PIN-code for all their smartcards. Eventually these codes are written down or they are observed by others when put in.
Some users even disable the PIN-code because the entry procedure is considered to be too cumbersome.
This is especially true in the mobile communications environment. In the ASPeCT authentication demonstration a compact voice template is stored on the smartcard along with a dual password system. Several voice templates can be stored on one smartcard if the owner permits access in case one wants the smartcard to be used by more individuals. The enrolment session typically requires three consecutive voice inputs to generate the template. The password is typically 2-3 seconds long.