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submitted 2 days ago by 154b161@lemmy.ml to c/android@lemmy.world

It turns out you can get a location just by scanning nearby wifi and cell tower signals!

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[-] artyom@piefed.social 6 points 2 days ago

Yeah of course you can, but why?

[-] 5gruel@lemmy.world 2 points 1 day ago

Power consumption is way lower and satellite acquisition takes time (or you keep your GPS running and warm/hot-start, but that draws even more power)

[-] artyom@piefed.social 1 points 1 day ago

You have that backwards. Power consumption is way lower using WiFi and cell.

[-] 5gruel@lemmy.world 2 points 1 day ago

Thats what I am saying :) wifi scans are cheap compared to booting up GPS.

[-] leanleft@lemmy.ml 1 points 1 day ago

it would help investigators if you get murdered

[-] lka1988@lemmy.dbzer0.com 2 points 1 day ago* (last edited 1 day ago)

Cops won't even get off their asses for stolen property with an airtag, location history, and even clear video footage.

[-] scott@lem.free.as 11 points 2 days ago

I'm not sure why anyone thinks receiving GPS data is "bad".

If you're somewhere where GPS is frequently jammed (such as a warzone, etc.) then it could be useful.

[-] 154b161@lemmy.ml 2 points 1 day ago

Receiving GPS data is not bad. Apps like this are more for demonstrating cool technology, not for practical use (though it seems to be working really well as well).

That being said, MicroG does use BeaconDB as a network location provider, so there is a lot of utility there as well.

[-] prenatal_confusion@feddit.org 2 points 2 days ago
[-] turmacar@lemmy.world 6 points 2 days ago

GPS is a passive receiver.

There's processing going on, but you dramatically decrease energy use by just updating less often.

It's not like you're sending a signal to space.

[-] 5gruel@lemmy.world 2 points 1 day ago

what are you talking about? GPS is far from a "passive receiver" in any sense of that vague term. It's running an oscillator at the carrier frequency.

GPS is probably the most power hungry sensor on your device.

[-] prenatal_confusion@feddit.org 1 points 2 days ago

I am aware of that but somehow expected that it still took more energy to receive until there are enough SATs available than to do a BLE scan. Just a gut feeling though and only receiving should have a bigger impact than I thought. Makes sense!

[-] 5gruel@lemmy.world 2 points 1 day ago* (last edited 1 day ago)

Don't worry your gut feeling is right. Wifi / Bluetooth scans are orders of magnitude cheaper. People in here don't unterstand how localization works.

[-] 154b161@lemmy.ml 2 points 2 days ago

I think it's more of "isn't this really cool" than "this is pratical to use". It's a proof of concept of a really cool idea.

[-] RebellionFox@piefed.social 4 points 2 days ago* (last edited 2 days ago)

It can help with location when you're on a device that doesn't have a GPS receiver. Like a laptop.

It might also help with initial positioning since it can take several seconds or minutes to get a GPS lock.

Edit: For anyone who want to contribute to BeaconDB there is NeoStumbler on F-Droid

[-] 154b161@lemmy.ml 2 points 1 day ago

Yes, MicroG uses BeaconDB to accelerate getting a lock.

this post was submitted on 04 Aug 2026
28 points (100.0% liked)

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