The Electronic ID using a Cell Phone and Its Evaluation

N. Machida, J. Kim, and T. Kobayashi (Japan)


cell phone, personal identification, off-line identification, two-dimensional symbol, security


This paper proposes a personal identification method using a cell phone for improving the function of ID cards. The method is called as the electronic ID using a cell phone. The personal identification data are stored in the server. Each user receives the data from the server on each cell phone. The cell phone displays the character data (name, affiliation, etc.), face images and a two dimensional symbol. The examiner checks these displayed data by using the terminal computer. Message authentication and encryption are used to protect the security. As the face image displayed on the cell phone is large enough in comparison with the photograph size of the conventional ID card, the precision is improved when the examiner compares the displayed face image to the live face. The personal identification is performed not only when the examiner's terminal can communicate with the server (i.e., on-line identification), but also when the examiner's terminal cannot communicate with the server on account of its failure (i.e., off-line identification). The proposed method is more excellent than the conventional ID card from the viewpoints of precision of identification, and the security. A prototype has been implemented and the evaluation is described.

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