Recent work in multi-touch tabletop interaction introduced many novel techniques that let people manipulate digital content through touch. Yet most only detect touch blobs. This ignores richer interactions that would be possible if we could identify (1) which hand, (2) which part of the hand, (3) which side of the hand, and (4) which person is actually touching the surface. Fiduciary-tagged gloves were previously introduced as a simple but reliable technique for providing this information. The problem is that its lowlevel programming model hinders the way developers could rapidly explore new kinds of user-and handpartaware interactions. We contribute the TOUCHID toolkit to solve this problem. It allows rapid prototyping of expressive multi-touch interactions that exploit the aforementioned characteristics of touch input. TOUCHID provides an easy-to-use event-driven API. It also provides higher-level tools that facilitate development: a glove configurator to rapidly associate particular glove parts to handparts; and a posture configurator and gesture configurator for registering new hand postures and gestures for the toolkit to recognize. We illustrate TOUCHID's expressiveness by showing how we developed a suite of techniques (which we consider a secondary contribution) that exploits knowledge of which handpart is touching the surface.

The goal of Spybuster is to provide a powerful and easy accessible community platform, which helps the members to cope with the increasing number of threats for everyone's privacy in everyday life. Spybuster uses a geotagging system to associate privacy threats with their locations. Users can add supplemental information such as a description of the threat and the exact address. The resultant tags can either be accessed over a mobile application with an interactive radar or a website using a Google Maps-mashup for displaying tags in a certain area. Due to a shared database users can organize their tags on both platforms. Categories and Subject Descriptors H.5.0 [INFORMATION INTERFACES AND PRESENTATION]:General: information interface for a mobile and a web platform. General TermsDesign, Security

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