Architecting Location-Aware Services on Android Without Killing the Battery

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It happened during a quiet Friday sermon at my local mosque. I had carefully checked my pocket before walking in, or so I thought. Halfway through the speaker's closing remarks, a sharp, high-pitched ringtone cut through the silence like a knife. Every head in the room turned toward me. My face burned as I scrambled to silence the device, eventually killing the call, but the damage was done.

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