ABSTRACT
In this paper, we explore new ways in which Near Field Communication
(NFC) can be used on smart phones. NFC allows
for contextual application invocation (CAI)—the execution
of code on the phone as a result of our environment.
We can launch applications because of contextual information
we learn from another transaction on our phone, or we
can associate context with a virtual token to recall at a later
time. We can also pass context from one phone to another so
the devices can interact in a multi-party session. This paper
presents a number of compelling applications using CAI and
addresses the associated security and usability concerns.