Seamless and continuous user identification for interactive tabletops using personal device handshaking and body tracking.

Touch-based tabletops are a form of embedded device for group collaboration. This work tackles two key problems for effective use of such tabletops: there is currently no easy way for people to identify themselves to the table; and most current hardware does not link a person's touches to their identity. This paper presents a system which tackles these problems as it can identify users and keeps track of their actions around interactive tabletops. To start the user identification, a user puts their personal device onto the interactive surface. Once this is paired with the tabletop, linking the device owner's identity to the table, the system continuously tracks any touch by that user. The system seamlessly and continuously associates each user touch with an identity.