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Some devices have them for sure, a small lithium cell that keeps a clock and some settings in place for when you swap batteries. At least that's how my camera w
by 001sky 12y ago
Some devices have them for sure, a small lithium cell that keeps a clock and some settings in place for when you swap batteries. At least that's how my camera works. I assume its egineered into other devices for similar reasons.
- ekianjo 12y agoYeah but do they have enough power to keep the phone connectivity alive and transmit things ?
- wlkr 12y agoYes, they do. I would recommend having a look at this for a succinct overview. https://security.stackexchange.com/questions/65382/is-it-possible-for-a-phone-to-be-transmitting-even-while-turned-off-and-the-batt/65455#65455 https://security.stackexchange.com/questions/65382/is-it-pos...
- jokoon 12y ago> perhaps they need a StingRay or Reaper drone in the area to boost the signal. The cell tower itself may be powerful enough to pick up the signal. that small battery would indeed not be able to be enough to send a signal to a cellphone tower, so you could not really track phones without primary batteries. current batteries are quite low powered, and wireless data is already pretty expensive in term of power usage. if you want enough data speeds. And I don't think you can effectively receive a GPS signal with a low powered battery. what they could do though, is automatically find nearest smartphones, and use them to retransmit. far fetched for when you don't move too much, but possible...
- tedunangst 12y ago> Then red dots for people who have turned their phone off and removed the main battery. Highly suspicious behaviour obviously. A Reaper or StingRay would then be dispatched to the red dot's location. Alrighty. So the NSA dispatches a reaper every time somebody drops their droid phone and the battery pops out?
- jokoon 12y agomaybe they reamplify the signal using nearest phones