General > General Technical Chat
Amazon fire stick - has GPS?
Shonky:
--- Quote from: coppice on July 15, 2023, 09:19:51 pm ---
--- Quote from: Picuino on July 15, 2023, 09:13:53 pm ---They don't really need a GPS to know exactly where the firestick is:
https://en.wikipedia.org/wiki/Wi-Fi_positioning_system
--- End quote ---
That only works with public hotspots. How many firesticks are connected to one of those?
--- End quote ---
Not at all correct. Many home WiFi hotspots are recorded by MAC address with their (approximate) location. So all a device needs to do is see one hotspot (public or private) and you can get a location within 50m or so. Add a couple of neighbours and you can get quite a good location.
The device doesn't even need to connect. It's enough to see the broadcast SSID advertising to see that MAC address.
ataradov:
--- Quote from: NiHaoMike on July 15, 2023, 10:18:34 pm ---Seems like it would be possible to program an ESP32 to spoof any location you want?
--- End quote ---
They use summary of all the networks. You can add your own matching some other location, but you can't subtract your neighbor's networks.
NiHaoMike:
--- Quote from: ataradov on July 15, 2023, 10:39:45 pm ---They use summary of all the networks. You can add your own matching some other location, but you can't subtract your neighbor's networks.
--- End quote ---
One could generate some interference (with NRF24L01 or similar) to block out the neighbor's networks, with the power very low to limit its range.
ataradov:
Sure, but it does not sound too reliable, plus you would affect your own network too.
This can't be productized for the masses, and I don't think they care if a couple geeks jam their own network to spoof the location.
It may be easier to just have it in a Faraday cage with just one access point. This way it will only see the notwork it is meant to see.
NiHaoMike:
The jamming could be at such a low power level (fraction of a milliwatt) that it basically has to be attached to the back of the device.
I suppose just putting it in a metal box along with a Raspberry Pi would work. But then why not just use the Raspberry Pi as the media player? (I suppose one could use a Raspberry Pi Zero, plenty powerful enough to use as a VPN router and cheap, but only limited to 1080p graphics.)
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