I am not an expert on security and I don’t know how to setup ddns, but I simply use Tailscale VPN to access my RPi4 homeserver running Umbrel from outside of my home, I simply installed Tailscale in my Umbrel and in my phone, and when I want to access from my phone Immich, Nextcloud or any other app running on my Umbrel. I simply enable the Tailscale VPN. Maybe it has some limitations, but is the simpler way I found, and based on what I read, it is more secure than exposing a port in the router, but not sure.

I don’t want to say crypto in general, but Bitcoin in particular was born after the 2008 crisis, as a decentrized form of money, meaning storing value against the inflationary fiat money that the goverments can print in a centralized manner, destroying all your savings. I think any technology that empowers decentralization is positive. Same as fediverse. And in the case of bitcoin, having a decentrized money it’s a really positive tool for freedom to avoid centralizing the power in the governments. But I am curious on knowing why you say that there is no positive uses.

Umbrel OS

I use Logseq in my PC and my phone and I unse Syncthing to sync the notes accross my devices.

The alternatives already exist and they are build on Nostr and it has different apps/clients to interact with that protocol. For example Olas is a Instagram-like and tik-tok-like app, and there are also many twitter-like or mastodon-like apps such as Amethyst or Damus

There is already an opensource alternative to Obsidian, its name is #Logseq, you have mobile and desktop app

In Graphene Os site, it says it has 3 years of support left. Normally my phones don’t last that long. So it’s fine for me, but obviouly I would recommend going for a newer Pixel version if you find a good deal. Edit: typo.

If you buy them second hand they are not expensive, I bought recently a Pixel 6 in backmarket for 200€ and it works perfectly.

Does this EU’s Digital Markets Act also applies for Android and all the preinstalled apps by Google and the phone manufacturer?