This article presents the design of Telebeads, a conceptual exploration of mobile mnemonic artefacts. Developed together with five 10-14 year olds across two participatory design sessions, we address the problem of social network massification by allowing teenagers to link individuals or groups with wearable objects such as handmade jewelery. We propose different concepts and scenarios using mixed-reality mobile interactions to augment crafted artefacts and describe a working prototype of a bluetooth luminous ring. We also discuss what such communication appliances may offer in the future with respect to interperception, experience networks and creativity analysis. ACM Author Keywords awareness, communication appliance, crafts, creativity, mixed reality, social networks, tangible interfaces, wearable interfaces, synaesthesia. ACM Classification Keywords H5.m. Information interfaces and presentation, H1.b. Artificial, augmented, and virtual realities

Abstract. Rather than merely imitating the desktop metaphor for mobile devices, new interface paradigms that take into account the particular characteristics of mobility, need to be developed. In this paper an input device based on the electromyographic (EMG) signal is proposed as a controller for mobile interaction. The interface can be considered subtle or intimate because individuals are able to interact privately without causing distraction to their immediate environment. The results from a preliminary study are presented to show the feasibility of the proposed system. 1

Our team has been exploring the possibilities of orientationbased sensors on mobile devices. We constructed a prototype system for delivering 3D acceleration and magnetic compass data to a Pocket PC and developed trial applications. One class of applications relied on the tilt sensors to provide a gesture interface to an application. A second class of applications used the magnetic sensors to create a style of portable augmented reality interaction called "Searchlight". Through our user studies, we learned that orientation-based user interfaces are fun and have the potential to improve the usability of mobile devices, but require a high degree of personalization.