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There's also the Picea from a German company that offers hydrogen storage for homes: https://www.homepowersolutions.de/

You actually buy their product already, but the investment and maintenance cost still require a good deal of idealism. But maybe in a couple of years this becomes interesting...


Other EU countries offer this for free, e.g. https://www.a-trust.at/pdfsign

What's even worse is that in Germany most companies and authorities refuse to accept those digitally signed PDFs.


I wanted to come back here and add a thank you. I registered at a-trust through their EU-Identity Login and now I am able to sign 5 Signatures (QES) for free each month. Great!


Norway is going one step further: it is possibly to check the net income of every resident online: https://www.skatteetaten.no/en/forms/search-the-tax-lists/


Having moved from Germany to Austria I was pleasantly surprised that they have a functional national ID system that you can use to sign PDFs with a qualified electronic signature. Within Austria, they have been accepted everywhere so far.

https://www.handy-signatur.at/hs2/#!sign/single

When I tried sending such a document to a German insurance company, they refused to accept it. I ended up faxing the document :/


Usually sending them the following helps them be less stubborn:

> Gemäß Artikel 25 eIDAS-Verordnung hat eine qualifizierte elektronische Signatur die gleiche Rechtswirkung wie eine handschriftliche Unterschriftund wird in allen Mitgliedstaaten anerkannt.

Doesn't work always, but the times it doesn't I usually find a competitor that does prove to be more cooperative pretty easily!


At least in the federal state of Hesse a fax isn't considered safe: (German) https://www.heise.de/news/Datenschutzbeauftragter-Gaengiges-...


... anymore. It was seen as safe until the last old ISDN / analogue landlines were converted to VoIP ones, which was really not that long ago :D


Releasing the code is the very least you should do to make your analysis reproducible. I would be surprised if it was possible to exactly reproduce the results from the paper alone.

From Heil et al. (https://www.nature.com/articles/s41592-021-01256-7):

> Documenting implementation details without making data, models and code publicly available and usable by other scientists does little to help future scientists attempting the same analyses and less to uncover biases. Authors can only report on biases they already know about, and without the data, models and code, other scientists will be unable to discover issues post hoc.

Even better would be to containerize all software dependencies and orchestrate the analysis with a workflow manager. The authors of the above paper refer to that as "gold standard reproducibility"


> It targets a certain demographic, people who have the physical ability to actually cycle. What about those who cannot, what about disabled people?

So do cars! What about people who can't drive, because they are too young, too old, don't have a license, or don't own a car?


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