37C3 Impressions

A week has passed since I attended the 37th Chaos Communication Congress (37C3) in Hamburg, Germany, together with a bunch of other KDE people.

KDE Assembly

For the first time KDE had a larger presence, with a number of people and our own assembly. We also ended up hosting the Linux on Mobile assembly as their originally intended space didn’t materialize. The extra space demand was compensated by assimilating neighbouring tables of a group that didn’t show up for the most part.

Just for the logistical convenience of having a meeting point and a place to store your stuff alone this was a big help, and it also made a number of people find us that we’d otherwise probably wouldn’t have met.

Talks

There was one KDE talk in the main program, Joseph’s Software Licensing For A Circular Economy covering some of the KDE Eco work. I’d estimate about 500 attendees, despite the “early” morning slot.

Beyond that I actually managed to attend very few talks, Breaking “DRM” in Polish trains being clearly one of my favorites.

Emergency and Weather Alerts

I got a chance to meet the author of FOSS Warn. FOSS Warn is a free alternative to the proprietary emergency and weather alert apps in Germany. That topic had originally motivated my work on UnifiedPush support for KDE, and an emergency and weather alert service that allows subscribing to areas of interest and receiving push notifications for new alerts, covering almost 100 countries.

The latter is a proof of concept demo at best though. The idea is to collaborate with the FOSS Warn team on a joint backend implementation, evolving this into something production-ready and usable for all of us.

While there’s still a couple of technicalities to resolve, after having met in person I’m very confident that this will all work out.

Open Transport Community

Other groups I’m involved with were present at 37C3 as well, like the Open Transport community, with the Bahnbubble Meetup being the event that brought everyone together.

Discussion topics included:

• Identifying and getting access to missing data tables and documentations for DB and VDV ticket barcodes.
• Helping others with implementing the ERA FCB ticket format.
• Evolving the Transport API Repository.
• International collaboration and networking between the Open Transport communities in Europe,
• Integration between Itinerary and Träwelling.
• Train station identifiers in Wikidata, including a recent property proposal for DB station numbers, as well as a yet to be written one for IFOPT identifiers.

Many more topics ended up being discussed in parallel, overall I’d say there’s more than enough content and interested people for its own dedicated event/conference on this. Until somebody organizes that there’s the open-transport Matrix channel and the Railways and Open Transport track at FOSDEM.

Indoor Localization and Routing

The OSM community was at 37C3 as well of course, and in that context I got one of the probably most unexpected contacts, by meeting one of the authors of simpleLoc. That’s an indoor navigation solution, which is one of the big open challenges in our indoor map view used in Itinerary.

Like other such solutions it’s unfortunately not fully available as Free Software, but the available information, components and published papers nevertheless turned out very valuable, in particular since this is using a localization approach that requires only commonly available smartphone sensors.

Much more immediately applicable were the hints on how they implemented indoor routing. Unlike for “outdoor” navigation graph-based algorithms are usually not an option, we need something that works on polygons in order to use OSM data as input directly. Existing solutions I encountered for that in a mapping/geography context were all proprietary unfortunately, but there’s a free library that solves that problem for 3D game engines: Recast Navigation.

While I’m not entirely sure yet how to map all relevant details to that (e.g. directional paths for escalators, tactile paving guides, etc), the initial experiments look very promising.

There’s obviously a ton of work left, as this essentially requires mapping all relevant bits of OSM indoor data to a 3D model, and that’s at the very limit of what can be extracted from the OSM data and data model in many places.

KDE Outreach

While people working on technology make up a significant part of the audience of 37C3, there’s many more people from other areas attending as well, so this also was an opportunity for a bit of user research, following the pattern of the kde.org/for pages.

KDE for activists

On the KDE for Activists page we focus a lot on tools for secure and self-hosted infrastructure. The need for that seems like a given or even a hard requirement for people in that field, not something that needs to be argued for (the event itself might provide a certain selection bias for that though).

What we however need to improve on is making this much more robust and easy to setup and manage for people that might not be familiar with all the technical details, jargon and abbreviations we expose them to. Even worse, that can pose the risk of making dangerous mistakes, up to causing people physical harm.

KDE for FOSS projects

Meeting other FOSS developers is also interesting, in particular those not well connected to our usual bubble. That’s often single person projects, some of them even quite successful ones. Around those KDE is then the odd outlier, due to our size and choice of tools/infrastructure (ie. not Github).

Topics that typically come up then are handling of finances, legal risks/liability, shortcomings of Github, moderation of communication channels, etc., all things far less painful from the perspective of someone under the umbrella of a big organization like KDE.

I think there’s some interesting discussions to be had on how widely we want to extend the KDE umbrella and how we want to promote that, what other umbrella organizations there are and whether there are still uncovered gaps between those, and how to manage the scope and governance of such umbrella organizations.

It’s probably also worth talking more about what we already have and do in that regard, it’s not even clear to everyone apparently that joining a larger organization is even an option.

KDE for public administration

We got questions for pointers to material/support for doing medium-sized Linux/Plasma deployments in public administration. This is unfortunately something we don’t have anywhere in a well structured form currently I think.

It would seem very useful to have, beyond a KDE focus even. There’s people on the inside fighting for this, and while the upcoming Windows 11 induced large-scale hardware obsolescence is working in our favor there, the increasingly pervasive use of MS Teams is making a migration to FOSS infrastructure and workspaces much harder.

Conclusion

I had very high expectations for this after the experience at 36C3, but by day 3 this had exceeded all of them. The extreme breadth of people there is just unmatched, coming from FOSS/Open Data/Open Hardware projects tiny to large, public administration and infrastructure, education/universities, funding organizations, politics and lobbying, civil/social initiatives, you name it.

And all of that in a fun atmosphere that never stops to amaze. While walking down a corridor you might find yourself overtaken by a person driving a motorized couch, and if you have an urgent need for an electron microscope for whatever reason someone over in the other hall brought one just in case. And all of that is just “normal”, I could fill this entire post with anecdotes like that.

Ideas and plans for 38C3 were already discussed :)