This paper introduces TurTan, a tangible programming language for creative exploration inspired by Logo, which uses a tabletop interface with tangible objects. The aim of this project is to design a toy language for programming entertainment and creative purposes. Along this paper we also discuss some interesting technical issues we have found during its implementation such as tangible linking and angle mapping.

Tap. Slide. Swipe. Shake. Tangible user interfaces have some scientists toying around with stuff you can really put your hands on.

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While the HCI community has been putting a lot of effort on creating physical interfaces for collaboration, studying multi-user interaction dynamics and creating specific applications to support (and test) this kind of phenomena, it has not addressed the problems implied in having multiple applications sharing the same interactive space. Having an ecology of rich interactive programs sharing the same interfaces poses questions on how to deal with interaction ambiguity in a cross-application way and still allow different programmers the freedom to program rich unconstrained interaction experiences.This paper describes GestureAgents, a framework demonstrating several techniques that can be used to coordinate different applications in order to have concurrent multi-user multi-tasking interaction and still dealing with gesture ambiguity across multiple applications.

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