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IEEE Scalable Key Management Algorithms for Location-Based Services
Secure media broadcast over the Internet poses unique security challenges. One important problem for public broadcast location-based services (LBS) is to enforce access control on a large number of subscribers. In such a system, a user typically subscribes to an LBS for a time interval (a, b) and a spatial region (xbi, ybi, xtr,ytr) according to a 3-dimensional spatial-temporal authorization model. In this paper, we argue that current approaches to access control...
GPS News Qualcomm's updated 3G chipset coming to ThinkPads
laptops, allowing users to connect to the world's two major types of 3G networks and use assisted GPS for location-based services. Gobi, which last year, includes both HSPA (High-Speed Packet Access) and EV-DO (Evolution-Data Optimized) technology in one
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