I am working on a project concept which involves identifying user input in the form of a kiss - all I need is to correctly identify a kiss ( ideally on a flat surface ). I tried it on a multitouch device but it's less than optimal - the touch events from a kiss is pretty inconsistent, also I do want the input to be able to interact with a computer. So now I'm exploring the possibilities to do it with Arduino.
I don't have much experience with hardware, so I'm looking for advice here - is there a way to properly identify a kiss with Arduino? Or, what kind of sensor(s) would be the best solution to this?
Thanks in advance to any input,