You can bring phones but I'd turn them off and put them in a faraday pouch. Most people have an old point-and-shoot digital camera in a drawer that can also do video. Take that with you. Bring radios for communications, and extra batteries. Take snacks and water. Dress warmly, and bring along a few hand warmers.
True. Once you remove it from the faraday pouch, even turned off, assume it has contacted one or more cell towers in your location. Two towers is enough to pinpoint your exact location. Phones do talk to towers when turned "off."
It's not all that complicated really. Towers have unique IDs and known GPS coordinates. When your phone pings them it gets signal strength for each. So if you have 75% signal for tower 1, and 50% for tower 2, they can figure out where relative to those two GPS points (the towers) you'd have to be to have that combination of signal strength.
Yep at the inauguration in 2017 all they asked for to get in was to show them you had a working cellphone! I had a knife and they didn’t even have metal detectors just showing a phone was enough.
You can bring phones but I'd turn them off and put them in a faraday pouch. Most people have an old point-and-shoot digital camera in a drawer that can also do video. Take that with you. Bring radios for communications, and extra batteries. Take snacks and water. Dress warmly, and bring along a few hand warmers.
True. Once you remove it from the faraday pouch, even turned off, assume it has contacted one or more cell towers in your location. Two towers is enough to pinpoint your exact location. Phones do talk to towers when turned "off."
Yeah, considering my grades in physics and trig, you'll have to show me proof of that.
It's not all that complicated really. Towers have unique IDs and known GPS coordinates. When your phone pings them it gets signal strength for each. So if you have 75% signal for tower 1, and 50% for tower 2, they can figure out where relative to those two GPS points (the towers) you'd have to be to have that combination of signal strength.
Yep at the inauguration in 2017 all they asked for to get in was to show them you had a working cellphone! I had a knife and they didn’t even have metal detectors just showing a phone was enough.