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78 lines
7.0 KiB
HTML
78 lines
7.0 KiB
HTML
<html><head><title>My Phone on Expo</title></head><body>
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<h1>My Phone on Expo</h1>
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<h2>Before Expo</h2>
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<p>Since 2019 it has become apparent that many people have not been properly prepared for Expo.
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<p>This is what you need to do:
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<ul>
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<li>Fix the (broken) default for your phone's location setting
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<li>Fix the (broken) default for uploading photos to the Expo Google photo album and the expo blog
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<li>Decide on two or three people you will share your location with for the duration of expo - people who are on expo at the same time.
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<li>Fix the <em>seriously</em> broken default for recording your GPS track when you are walking in the plateau.
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</ul>
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<p>For the latest updates for the most recent phones, go to: <a href="https://dontkillmyapp.com/">dontkillmyapp.com</a>
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<h3>The reason why</h3>
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<p>Phones assume that you are walking along streets, or running along tracks or cycling. They are very bad at making the right guesses for the Totes Gebirge plateau.
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<h3>Location, location, location</h3>
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<figure class=onright width=500>
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<a href='/handbook/computing/gps-location.png'><img class="onright" alt="GPS position controls" width=40% src='/handbook/computing/gps-location.png' /></a>
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<br> <figcaption style="text-align: center"> Android GPS setting </figcaption>
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</figure>
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<p>Do <em>not</em> select the "high accuracy" location setting on your phone. Mostly this will snap your position to the nearest cafe or bierstube: by default it will use the nearest WiFi it can find and assume that you are there, and will ignore the perfectly reasonable GPS position it has recorded directly.
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<p>This is all explained by Google <a href="https://support.google.com/maps/answer/2839911?hl=en&co=GENIE.Platform=Android">here</a>.
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<p>On the plateau, this "high accuracy" mode will simply give you the <em>wrong</em> position if it can't get a decent GPS fix. There is poor cell tower reception too, so trying to use that for location is just as bad.
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<p>What you want is GPS and <em>only</em> GPS (more precisely <a href="https://en.wikipedia.org/wiki/GNSS_applications">GNSS</a>: which includes GPS, Glosnas, Beidou, Galileo etc.).
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<p>If you do not have a good GPS fix, <em>you want to know that</em>, not be given some confabulated guesstimate by whatever some programmer for Apple or Android thought your might want.
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<h4>Airplane Mode</h4>
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<p>If all that config sounds too tricky, or if you have done it but are not confident that it works, just put your phone into <a href="https://en.wikipedia.org/wiki/Airplane_mode">Airplane Mode</a> when on the plateau, and re-start your GPS app after you do so.
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<h2>Privacy settings - not what we want here</h2>
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<p>When you share photos on your phone to the Expo photo sharing site, by default, the location of those photos will be stripped out. So all those lovely pics of intriguing cave entrances you snapped on your walks are now utterly useless.
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<p>So, before expo, perhaps while sitting in a traffic jam around Munich or on the train from Bad Ischl, take a moment to photograph your travel companions in an embarassing pose and fix the this:
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<ol>
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<li>Go to Google photos on your phone
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<li>Click the Sharing icon (top right, next to your own mugshot icon)
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<li>Click on the "Expo Social Media" album that is being used for this year's expo
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<li>Click on the 3 vertical dots, top right., then "Options"
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<li>Slide the toggle on "Share photo locations" to the right to enable location sharing.
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<li>You need to do this on each individual Google photo album.
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</ol>
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<h3>Phone camera procedure: Cave entrances</h3>
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<p>Even if you have no intention of using your location or recording a track, the camera in your phone will record locations of your photos which are extremely useful to future expeditions - for reasons which only become apparent when you yourself try to work out what someione did 10 years previously.
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<p>Your <em>camera</em> will use the same locaiton settings as the rest of your phone, but sometimes with a bit of a delay. We have lots of examples of geo-located photos where the recorded location is alctually the location of the <em>previous</em> photo because someone has taken a quick photo but the phone hasn't had time after waking up to get a location, so it uses the previous one! And doesn't tell you!!
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<p>So when taking a photo of an entrance, always take one photo; delete it, and take another. This will give your phone a chance to get synchronised properly.
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<p>ALSO: always take 3 photos of any entrance, the obvious one about 10m away, a scene-setting one from 20 or 30m away, but also a really close one of 3 to 5m away, so that we can see if rocks have moved around the entrance and also for a much better identification in future. If there is a tag, <em>always</em> take a close-up photograph of it so that the letters are readable.
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<h3>Share location with useful people on expo</h3>
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tbd
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<p>So that we can spend less time looking for the body in horrible conditions...
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<p>[someone write this is a less frightening way, please?]
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<h3>Disabling GPS "energy saving" modes</h3>
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<h4>Why</h4>
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<p>If recording a track, you do <em>not</em> want your phone to decide to go into "energy-saving mode" (the default if you are not actively interacting with your mapping app, such as OSMand) as it will drop location points and your recorded track wil now gaily bound over impenetrable chasms, rendering it rather useless for finding your way home in thick cloud.
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<p>Unless you have already done a couple of days with your phone set into "continuous GPS mode", you have no idea how long your battery will last. So if you haven't already practiced this on a fell in the UK, you need to <b>bring a phone backup battery</b> with you on expo.
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<p>You can buy phone battery backups in Austria, but they are a bit epxensive, and hard to find in Bad Aussee (try the post office phone shop, or the deviously hidden electronics repair shop in central Bad Aussee).
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<h4>How</h4>
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<p>detailed instructions depend on the type of phone and the version of Android - someone fix this ?!
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<h4>How: with OSMand</h4>
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<p>If you have standard battery saving set up, when you start up OSMand and start recording a track, it will do a popup telling you about how to turn off battery saving.
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<h3>Calibrate/document your phone's capabilities</h3>
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<figure class=onright width=20><a href='/handbook/computing/l/gpstest.html'><img width=20% src='/handbook/computing/t/gpstest.jpg' /></a></figure>
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Install the "GPS Test" app, this one: <a href="https://play.google.com/store/apps/details?id=com.android.gpstest">GPS TEST</a> and check whether your phone is using SBAS "Satellite-based Augmentation Services", which is another name for EGNOS, the differential GPS system.
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You need to record if SBAS is in operation whenever you record the position of a cave entrance (and ideally whenever you take a photo too, but that would be unrealistic).
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<hr>
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Go on to <a href="/handbook/computing/gpxupload.html">Saving your GPS tracks</a></body></html>
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