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With the battery removed there were ways track phones at least in the 2G days, you won’t be able to use cellular tracking but the phone could be detected by flo
by dogma1138 6y ago
With the battery removed there were ways track phones at least in the 2G days, you won’t be able to use cellular tracking but the phone could be detected by flooding the area with RF and looking for a specific signal pattern that would happen wether the phone was powered on or not or even if it didn’t had a power source.
I don’t know if the new phones can still be tracked like this but in the early to mid 2000’s you had airborne pods capable of detecting phones in remote locations even those which were off/without a battery.
- nine_k 6y agoA small metal box should work well. For extra inconspicuousness, make the box look like a flask.
- Engineering-MD 6y agoDo you have a citation for this? Not doubting you but I’d like to read more and most I can online isn’t very technical
- dogma1138 6y agoYou can refer to some of the NSA leaks like “The Find” https://www.washingtonpost.com/gdpr-consent/?next_url=https%3a%2f%2fwww.washingtonpost.com%2fworld%2fnational-security%2fnsa-growth-fueled-by-need-to-target-terrorists%2f2013%2f07%2f21%2f24c93cf4-f0b1-11e2-bed3-b9b6fe264871_story.html https://www.washingtonpost.com/gdpr-consent/?next_url=https%... I’ve seen a demonstration of this (intelligence community heritage museum, it was public it was part of an RF demonstration which also included remotely capturing screen images by listening to a VGA cable and some other cool stuff), the specific mode of operation wasn’t revealed it wasn’t clear if the RF absorbed by the antenna causes enough current to flow to power something in the cellphone which sends out a chirp or if it’s completely passive and measures the RF attenuation changed from an antenna being present. It wouldn’t surprise me if older 2G phones could be wirelessly powered to some extent I still remember those inductive LED after market antennas for old Nokia phones. Alternatively even if no logic was powered it might be that there was some sort of a mechanism to deal with unwanted buildup like tying a capacitor that once full discharges back through the antenna which causes it to emit signal, that might be the thing that makes most sense since otherwise you are risking building up enough charge to damage something.
- xscott 6y agoI'd like to know more about this. Do you have any links?
- dogma1138 6y agoThe availability of public sources is limited, look for reports about “The Find” from the NSA leaks.