Tablet owner authentication based on behavioral characteristics of multi-touch actions

This paper proposes a method for tablet owner authentication based on behavioral characteristics of multiple fingers' actions called multi-touch actions. The method is based on dynamic time warping, which has been commonly used for authentication using pen-tablet or single finger's actions, but another problem arises due to the use of multi-touch actions (e.g., identifying fingers). We also provide methods for these problems. Using proposed method, we evaluate the authentication accuracies for several types of multi-touch actions through experiments.