If you are not familiar with Ada & Zangemann consider reading the story at https://fsfe.org/activities/ada-zangemann/ The illustrations come from the book.

<img src="boundary.png.jpg" width="800">
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Have to expand quite a bit more here. Stationary versus room scale.

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<img src="wifi.png.jpg" width="800">
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The WiFi signal comes from the Raspberry Pi Zero. There is no Internet connection. Being offline allows for complete privacy and potentially better resilience.

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<img src="browser.png.jpg" width="800">
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browser as client to connect to server

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<img src="http.png.jpg" width="800">
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HTTP as unsafe protocol simply because there is no encryption. Consider sending a postcard by mail, anybody involved can read it.

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<img src="certificate.png.jpg" width="800">
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In order to encrypt the content each server most "prove" who they are. This is done by acquiring a certificate from a certificate authority. Offline there is no such entity. It is also interesting to consider the centralization and its consequence on power.

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<img src="accepting_certificate.png.jpg" width="800">
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It is OK to have your own server and consequently accepting self-signed certificate. It should mostly be done only when knowing how it works though, not while doing things online where potentially banking and other important data might leak.

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<img src="entervr.png.jpg" width="800">
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From 2D to VR, showing how the browser in VR is initially just a flat plane. Entering VR means having immersive content.

Note that a similar process can be done on other devices, e.g. phone or laptop.

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<h2>Backup</h2>

Backup if it didn't work on don't want to wear headset 

<a href=https://video.benetou.fr/w/o7JuWdfy1SRvjbLaRLjLy9><img src="https://video.benetou.fr/lazy-static/previews/3dd9f5af-d14b-4961-8ef4-562b3985dd52.jpg" width="800"></a>

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Click on the image to play the video.