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Preliminary research result: 9 out of 10 Design and Analysis of Communication Systems group members accept cookies provided they are chocolate chip. We are still looking into other varieties of analytical and tracking biscuits.

My adventure with the UK Cabinet Office is now over. Most documents were not released, but from what was shared, we know that the Cabinet Office holds no information that forms the basis of the published call for input. Read the last part here: blog.koenvh.nl/the-end-of-my-…

Something I had planned on doing for a long time: an illuminated version of my logo. The regular paper draft version already looks pretty good - now let's turn it into a more permanent version.

We continue our research into cookie acceptance among DACS members. Preliminary results show cookies are less likely to be accepted just after lunch.

I now printed the more permanent version of my illuminated logo - quite happy with how it turned out :-)

My submission for this year's Special Interest Group on Harry Q. Bovik: Ad Fund 'Em - a LaTeX package that automatically inserts adverts in your manuscript so you can monetise the space. You only have to add `\usepackage{adfundem}`. You can find the full text here: github.com/Koenvh1/adfund…

Whenever something doesn't work, it's generally the DNS. That's why we (re)introduce The Phone Book of The Internet. You can read more and download your own copy here: nlnetlabs.nl/news/2025/Apr/…

All good things must come to an end, and #SIGBOVIK 2025 is no exception. For those who missed my recorded presentation, you can watch it back on YouTube: youtu.be/_vgXi80y7Us

The Phone Book of the Internet is now a physical book! 1.5 kg and 600 pages of popular domain names and their IP address listed in alphabetical order.

As a small hobby project, I made booklets with the pacenotes for each stage in EA WRC. They are also available as PDF online if you want to print them yourself: koenvh.nl/wrc

Some people have asked me "why does the Phone Book of the Internet" not support IPv6? The simple reason is that it just does not fit:

This weekend's project: PedalPal, an application that allows someone else to control your pedals in any racing game. I'm still tweaking with it, but it works very well so far.

Recently I had to look into backup solutions again, and because of that I decided to write about my backup journey and gripes with most backup software. You can read the full piece here: blog.koenvh.nl/a-tale-of-back…

What do you get when you combine typesetting, printing, and automation? A car full of cardboard boxes. Read all about it in my post about how I made 252 rally pacenote booklets: blog.koenvh.nl/how-i-made-and…

Even though it is now over a month ago I was busy this April Fools. I made a summary of the things I did; if you're interested, you can read about it here: blog.koenvh.nl/april-fools-20…

Gisteren was er een ontbijtsessie "Wet Open Overheid", waar ook de transparantieprijs werd uitgereikt. Van de 4 nominaties was van 2 de strekking "probeert de wettelijke termijn te halen". Volgens mij is dit een teken dat er nog winst te behalen valt. ibestuur.nl/artikel/openba…

After over two months we resume the cookie experiment at the University of Twente, this time using stroopwafels. Admittedly at this point I've stopped tracking the data.

Good morning! Last weekend I made a clock where it's always 11 AM, just the timezone changes, so I can always say good morning. See it for yourself here: koenvh.nl/playground/11a…

Good morning!

As many people probably already know, I fly a rainbow flag outside my house. Not just during pride month, but pretty much year round. I hope that one day LGBTQ+ acceptance will be as self-evident as women's voting rights, but until that day there is still something to fight for.