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In this paper, we introduce our research on power conserving and access efficient indexing techniques for wireless computing and revisit some of the pioneering work in this area. These indexing methods show that battery power consumption in mobile clients can be significantly reduced with some access time overhead. Among them, hybrid index is the best choice for improving power efficiency under both scenarios of single and multiple attributes based queries. Moreover, we introduce two access efficient indexing methods, cache schedule and integrated signature, for a wireless data dissemination system that incorporates both of broadcast and on-demand services.