The results of actual field tests of a new class of Personal Imaging systems, the Electronic News Gathering WearComp (ENGwear), are presented. These incorporate EyeTap Technology to cause the eye itself to function as if it were a camera, and to allow the eye to be wirelessly tapped out of and tapped into, capturing exactly what the user is viewing. This brings the point of view of the camera to the same point as the user's eye, and also allows the user to allow others to wirelessly modify his/her perception of visual reality. Images thus captured are simultaneously sent and received live to and from the internet using IP-over-wireless technology. This novel application of wireless technology empowers reporters: ENGwear systems allow for a great degree of mobility, and are constantly operational and recording to a circular buffer allowing the reporter to never "miss a shot".

Based on a multi-scale, straight-oriented mobility model, this paper presents a lookahead strategy for distance-based location tracking so the rate of location update can be reduced without incurring extra terminal paging costs. For linear mobility graphs, the optimal registered cell is found by an iterative algorithm so the average cycle length is maximized. For planar mobility graphs, the authors employ the results from linear cases to determine the eligible registered cell. Performance gain is evaluated by using Monte Carlo simulation for mobiles with different degrees and scales of mobility. Analysis shows that the tracking cost for mobile users with large mobility scales in microcellular networks, costs which are usually underestimated by the traditional random walk model, can be effectively reduced.

The Mobile Communication and Computing Architecture (MoCCA) was built to support field-based teams of service engineers to collaborate autonomously and perform their activities in an on-the-move working environment. There is no physical contact among the members of a group of geographically distributed mobile field service engineers (FSEs) to share/build corporate memory. The challenge was to provide a system that allowed the FSEs to access information and advice from other FSEs while on customer sites and while commuting between sites. This novel wearable computer architecture can support collaborative multimedia: on-the move networking for high-tech equipment maintenance using voice bulletin boards, video clips, and access to maintenance databases. Synchronous and asynchronous collaboration are supported for both voice and digitized information.