One of the area’s of research from Telematica Instituut is using technology to determine the context of people. For example where you are, who you are with, what is your mood, what are you doing. This context is very usefull input for a lot of other things like recommendation (when you search for a restaurant to dine with you new girlfriend and value my opinion you do not want to use my recommendation of a restaurant I liked because it is so nice for the kids). So context is king for lots of new “social” applications.
For this we have created a new application called IYOUIT (meaning I, You and It). This is an application for mobile phones (Symbian S60) and constantly monitors your context and shares this with your friends. Recently this tool is made available to all. Have a look at it. It uses only the standard phone sensors (GSM signal, Bluetooth, WiFi, GPS if available) to determine things like location, who is close and such.
One of the things this also shows is the power of “mashup programming”. The application uses all kinds of readily available applications. Google Maps of course but also weathersites. Why measure local temperature (and be dependent on extra hardware sensors) if you can find the local temperature based on your location data on a existing weather site?