Social Signal Processing is a relatively new field with some interesting points of contact on Mobile (PDAs and smart devices) Social Networking. New mobile (PDA and smart devices) devices are equiped with interesting sensors that allow them to record together with the corresponding heuristics social relationships in everyday situations. For this example, gyroscopes, accelerometers, compasses, temperature sensors, etc. Interesting questions like how to use these devices to build social barometers and services that could influence social life more ubiquitely. For further investigations here are two interesting papers.
* Alessandro Vinciarelli, Maja Pantic, Herve Bourlard "Social Signal Processing: Survey of an Emerging Domain" http://www.idiap.ch/~vincia/papers/sspsurvey.pdf
* Alex Pentland et al.: MIT Media-Lab: Reality Mining Project, 2009 Publications, http://reality.media.mit.edu/publications.php
