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27

Technically - the process is called trilateration and operates by cross checking all BSSID - the unique identifier / MAC address for each wireless base station that your Mac can detect while it listens periodically or is actively searching to join a WiFi channel. How does Maps on Mac OS determine the computer's location You can run this scan manually ...


19

For most practical situations, GPS will work well enough for you to track your progress but not have great coverage (less than 2m accuracy) or accurate speed over ground readings from iOS. From an antenna / physics perspective, you may have horrendous GPS reception since you are riding inside a mostly complete faraday cage. Even if you have your phone in a ...


16

Yes, airplane mode shuts down the radios that amplify all antenna circuitry. Compass isn't affected by airplane mode other than not being tuned by GPS location. Your observed relative changes will be mostly unaffected but absolute accuracy could suffer between one and ten degrees on much of the globe. Of course the GPS signals still hit the iPhone case and ...


12

Domestic Satellite Navigation systems usually include limitations as a security measure. The general rule is that nothing off the shelf should be able to assist in the creation of a guided missile. To that end most, if not all, civilian GPS units will fail or work poorly if any of the following conditions are met: High Altitude - Once you are higher ...


9

The iPhone does have two ways to get altitude, but the barometer is not one of them. You can only use a barometer for relative altitudes, not absolute, unless you know the current atmospheric pressure at sea level. But as well as GPS, Apple maintains a database of the locations (presumably including altitude) of a vast number of wifi networks, so if the wifi ...


8

Apple uses WiFi hotspots (and presumably the corresponding signal strength) to triangulate your position using a data from Apple. Similar to how Google maps a hotspot using their StreetView cars, a 3rd party at one time scanned the area you travelled to and mapped the SSID and probably MAC address of the local hotspots. Though I don't know if they still do,...


8

In iOS, Location Services sits between all the location radios (cellular tower info, nearest wifi, GPS) and the apps, and caches the fused results between getting new information from those radios at a rate determined by the OS for decent battery life versus requested accuracy. Apps never "control" or talk to the GPS hardware or OS driver directly. The ...


8

I just tested exporting a file from Photos and it retained GPS information. Are you using Export > Export X Photo(s), or Export > Export Unmodified Originals for X Photo(s)? I used the latter. To find the actual GPS coordinates there are many, many solutions, but I used the most-excellent command line ExifTool when testing to ensure the GPS information was ...


8

Option 1 - Google Maps Location History One of the easiest solutions for background location tracking that takes very low amount of energy. Download Google Maps and Enable "Location History". How to Enable Google Maps Location History Open Google Maps Tap Menu and then Settings Click Personal content and then scroll down to "Location settings" Click to ...


6

I think Airplane Mode disables the hardware chips. GPS and 3G/LTE are on the same chip. I would say, Airplane Mode also disables GPS.


6

exiftool itself can now also generate GPX files. You can download the gpx.fmt template from the exiftool website, then run exiftool -p ./gpx.fmt *JPG > output.gpx Some useful options: -if makes exiftool only process files with a gps tag, -fileOrder allows processing in a forced order, -d allows formatting the datatime string. For example: exiftool -if '...


6

Apple provide a support article to help improve Activity's accuracy, Calibrating your Apple Watch for improved Workout and Activity accuracy: Bring your iPhone and your Apple Watch. Find an open, flat area outside that offers good GPS reception and clear skies. Make sure that Location Services is on. To check the setting on your iPhone, tap ...


6

The generic answer you can find at Apple support website About location precision or accuracy Depending on your device and available services, Location Services uses a combination of cellular, Wi-Fi, Bluetooth, and GPS to determine your location. If you're not within a clear line of sight to GPS satellites, your device can determine your location using ...


5

GPS chips draw about 50 mW at full power (see also here, modern mobile chips draw even less). The antenna does not draw power, that's not how antennas work (I assume the signal amplification and filtering is handled inside the GPS chip. If not, this would add slightly to the power draw). So in 1 hour, the chip draws 50mWh from the battery if at full power. ...


5

Yes, GPS can be used by more than one app at a time. I frequently use Runkeeper in the background for tracking my movement, and Zombies Run or Geocaching in the foreground. I've never had any issues with any of them not getting the data.


5

I'll preface this with, I'm not an IOS developer, but I'm sure it works much the same was as Android and other GPS APIs. When an App calls the GPS APIs it's calling an abstraction to the GPS/Location system and receives position information that the system presents. So in this case when one application asks the OS for Location data, the OS uses a mix of ...


5

How accurate is the GPS information that developers can get when using the iPhone X? It's a subjective question and the perceived accuracy of location data may differ based on usage, location and signal availability. While the real answer can only be obtained by actually capturing the data, I'll try to share some information which can help you with your ...


4

The existing answers are now outdated. Since iOS 8.2, you can still use the GPS even in flight mode. Apple's statement says: If you have a device with iOS 8.2 or earlier, Airplane Mode will also turn off GPS. Source: https://support.apple.com/en-gb/HT204234


4

I tried everything I could think of, but I eventually completely reset the phone and did not restore my old configuration. I started from new with my iPhone and now it is working fine.


4

The iPhone's systems are optimized for battery life. From the chip design to the OS, battery conservation takes precedence over all. GPS chips are massive power consumers. Read these answers for more information on GPS chip power use. Due to this, the iPhone will always prefer to find its location with wifi/cell tower triangulation, then refine with GPS. ...


4

This is from a fact, on my last trip, I was trying to see how fast the airplane was travelling using Speedometer app on iPhone 5c. It didn't work. Speedometer doesn't show location, so I tried Strava. It also didn't show speed, but it's showing that the position on map jumped occasionally. I don't think it's GPS signal issue, I brought a Garmin bike ...


3

Before you leave for your trip you'll need to install an offline mapping app like "CityMaps2Go". You need offline maps because you will not actually be connecting to the internet while you are doing your sightseeing. When you arrive in a new city you'll have to find a hotpot (hotel, Mcdonalds, Starbucks etc) and connect to the internet. This is the one and ...


3

I'm certain that tool does not exist. That being said, you can open the .gpx file in TextWrangler (free) and view the time stamps and edit them. They are in the XML format: <time>2013-03-21T18:04:36Z</time> I dont see why you couldn't import them into an excel spreadsheet and alter the times with an algoritm that would add a specific quantity ...


3

When you tether an iOS device, it will have a live data connection and perhaps make some better use of any Wi-Fi signals that are in range for determining location, but in general - you won't get GPS like accuracy just because an iPad or iPod is connected to a phone (android or iOS) over Wi-Fi tethering. Just like your computer can't really gain GPS data ...


3

Gaia GPS is what you're looking for. Costs $20 USD on the App Store, but the best at what it does.


3

If Location Services are on for the Camera.app, EXIF data will include GPS data. If it is not, it will not for photos that are taken with Camera.app. Location data can be inserted on an app by app basis. I tested, for example, Camera.app, and Camera+. The former had Location Services disabled, and the latter was enabled. As expected, the former had no GPS ...


3

Exiftool is going to be the easiest way to do this. Here is a script that generates KML output for a list of images. You can modify this if you want a KML path, etc... #! /usr/bin/env python # -*- coding: utf-8 -*- """ Create a KML file based on exif data Requires exiftool to have been installed Usage: exif2kml.py *.jpg > output.kml """ import ...


3

Location accuracy uses (from best to worst) gps, wifi, and cellular triangulation. Your question would take a lot of text and links to completely answer so I'm just going to try and give it a high-level approach. Many things have to happen correctly for your husband to get your exact location: you need to have a clear signal from the gps satellite, the ...


3

Your laptop does not have a GPS receiver so there is nothing to disconnect (phones do have a GPS chip). Your location is determined by a couple of methods: a database of wifi access points. Those locations are in turn determined when a device with GPS accesses the same wifi. This can be accurate down to the building. geolocating your IP address. Usually ...


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