Abstract
Conventionally, such as in the bank ATM, the personal authentication demands the input of four-digit PIN codes as a personal identification number to authenticate the subject, it has been carried out by judging whether or not the number is correct. However, the current situation is unending case that personal authentication would have been break through the authentication by a relatively simple method. For example, the voyeur at the time of input or shoulder surfing, further use of a remaining trace after input PIN codes. In this paper, we propose a personal identification system strong to multiple shoulder hacking. The proposed system constitutes a virtual touch panel (VTP) in front of the eyes of the user by depth sensor, and performs input of PIN code by aerial operation that contactless and without leaving a trace. And using both the PIN code and finger information selected the PIN, the proposed system becomes strong to multiple shoulder hacking. And we verified the usefulness of the proposed system by the evaluation experiment.
