re: #2 otoc

Geotagging from a cell phone has a margin of error of 15 ft.
Geotagging
I think the fact that he hasn’t made a post to his Instagram account in 4 days now is telling us something.

If one is using a GPS system for location, yes.

From your article:

Many smartphones and digital cameras come with built-in GPS with a geotagging feature that embeds at least the latitude and longitude coordinates of your location. Geotagging has an accuracy of within 15 feet.

However, a lot of people don’t necessarily keep the GPS on their phone turned on all the time. It can be a pretty power-hungry feature, and it’s not necessary for a lot of the things the phone does. The phone can still make a guess regarding the location by using the location of cell phone towers, however. In Android terms, this is referred to as the “coarse location” while information from GPS would be described as “fine location.” The margin of error on the coarse location is going to be substantially larger than that of the fine location. If you have a smartphone and are curious about this, pull up Google Maps. They will show you your location and a circle surrounding you. That circle represents the uncertainty in your position. It’s a whole lot bigger if you have GPS turned off.

I don’t know if Instagram is set to use the coarse location information if the fine location is not available; I deleted my account there several years ago after some of their more spectacular copyright derp. My guess is it’s likely. Of course, none of this rules out the possibility that he did have GPS turned on and therefore the geotagging is accurate. I offer it only to provide some context and background.