  On-line signature verification for Tablet PC devices is studied. The on-line
signature verification algorithm presented by the authors at the First
International Signature Verification Competition (SVC 2004) is adapted to work
in Tablet PC environments. An example prototype of securing access and securing
document application using this Tablet PC system is also reported. Two
different commercial Tablet PCs are evaluated, including information of
interest for signature verification systems such as sampling and pressure
statistics. Authentication performance experiments are reported considering
both random and skilled forgeries by using a new database with over 3000
signatures.
