MTi: A method for user identification for multitouch displays

• MTi, a biometric method for identification on multitouch displays.
• Method based on features extracted from touch coordinates of the user's hand.
• Applicable to multitouch displays capable of detecting 5+ touchpoints.
• Tested on multitouch data — 34 users, identification accuracy 94.69%.
• Scalability tested on the Bosphorus hand database — 100 users, accuracy 94.33%.

This paper describes MTi, a biometric method for user identification on multitouch displays. The method is based on features obtained only from the coordinates of the 5 touchpoints of one of the user's hands. This makes MTi applicable to all multitouch displays large enough to accommodate a human hand and detect 5 or more touchpoints without requiring additional hardware and regardless of the display's underlying sensing technology. MTi only requests that the user places his hand on the display with the fingers comfortably stretched apart. A dataset of 34 users was created on which our method reported 94.69% identification accuracy. The method's scalability was tested on a subset of the Bosphorus hand database (100 users, 94.33% identification accuracy) and a usability study was performed.

Figure optionsDownload as PowerPoint slide