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PODCAST

Chaos Computer Club - recent events feed

Der Chaos Computer Club ist die größte europäische Hackervereinigung, und seit über 25 Jahren Vermittler im Spannungsfeld technischer und sozialer Entwicklungen.

technology

All Episodes

00:02:00

Closing - Day 1 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

A thank you from the organisers. We hope you enjoyed your day! about this event: https://talks.python-summit.ch/sps25/talk/AZGSCP/

00:41:46

Lightning Talks - Day 1 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

Our Lightning Talks are open to everyone 😊 about this event: https://talks.python-summit.ch/sps25/talk/EP7BNX/

00:30:18

Using Python's array API standard for ESA's Euclid...

Chaos Computer Club - recent events feed ·

2025/10/16

Over the years, the lack of an array data type in Python has resulted in the creation of numerous array libraries, each specializing in unique niches but still having some interoperability between each other. NumPy has become the de facto array library of Python, and the other array libraries try to keep their API close to that of NumPy. However, this often becomes infeasible, and the libraries deviate out of necessity. To make Python's array libraries shake hands with each other without any

00:36:16

The High Price of Open Source: Building a Business...

Chaos Computer Club - recent events feed ·

2025/10/16

Open Source has never been easy, but doing Open Source in the Matrix ecosystem poses a unique set of challenges. Add the pressure of sustaining a company on top of that, and you quickly find yourself in uncharted, and often uncomfortable, territory. This talk reflects on the reality of maintaining open source projects in the Matrix universe, especially from the perspective of a business. It dives into the tension between openness and exploitation, when others take your work without contributing

00:31:18

Software estimation: False sense of certainty (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

It has been known since the 70s that developers tend to give very optimistic estimations. We prefer to have exact numbers, even if that means they are wrong most of the time. In research, developers admitted that they believe their managers will see them as less competent if they provide estimates with huge margins. But mathematically speaking providing a wider min-max interval means you will be right more often. So, maybe it isn’t really accuracy that businesses and people are looking for. Maybe

00:13:43

E2EE Direct Messaging in Bluesky with Matrix...

Chaos Computer Club - recent events feed ·

2025/10/16

See a demo of E2EE encrypted DMs in Bluesky powered by Matrix. We will highlight the simple user experience and other advantages of this approach to adding E2EE to Bluesky. By reusing Matrix for E2EE DMs in Bluesky, we not only offer a trusted and tested open source encryption stack but also allow users to later expand their usage beyond chat to other Matrix features such as E2EE voice, video and more. Alternate approaches to build E2EE from scratch in Bluesky will take many years to achieve

00:37:30

An Update on reaching the German Government via...

Chaos Computer Club - recent events feed ·

2025/10/16

With *Beyond Instant Messaging: Matrix in the Public Sector* last year, we presented FITKO and the German Federal Ministry of the Interior joining efforts to pilot a Matrix-based next-generation communication infrastructure for digital government services, with the goal to showcase end-to-end encryption, great usability and machine-readable communication between citizens and public authorities. Lets take another look at the project, what we have done since and what else there is to come for

00:44:52

Commercialising Matrix (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

Can Matrix compete with Big Tech? That remains an open question - but the market conditions in Europe have never been more favorable to sovereign, European software solutions. So how do we build commercially sound companies based on Matrix? This talk will focus on real-world use cases, showcase features built for public-sector customers, explore viable business models, and share hard-earned lessons from bringing Matrix to market. Agenda: 1. Why Meedio? Why Matrix? 2. Going open source - choosing

00:29:02

Large-scale multi-tenancy hosting for TI-Messenger...

Chaos Computer Club - recent events feed ·

2025/10/16

In this talk we will introduce Synapse Pro, the Matrix server for professional environments from Element. Synapse Pro is built to support professional Matrix deployments in terms of scalability, efficiency and high availability. It comes in two flavours, Synapse Pro for Small Hosts and Synapse Pro for Large Hosts. The Small Hosts solution introduces multi-tenancy capabilities in order to host plenty of small Matrix servers in a resource-saving and cost-efficient way. The Large Hosts solution

00:40:22

The German BundesMessenger (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

The BundesMessenger is the soverein communication solution for the German government and armed forces. Developed to be robust, secure and interconnected it serves as the basis for collaboration in the public sector. With a sharp focus on user experience, an uncompromised commitment to free and open-source software and state-of-the-art deployment of cloud technologies, it brings a high-quality messenger to firefighters, soldiers and office workers. Want to know what makes the BundesMessenger quite a

00:26:22

Building Resilient Python Apps for Unreliable...

Chaos Computer Club - recent events feed ·

2025/10/16

In many parts of the world, especially across Africa, software cannot assume a stable internet connection. From rural communities to field agents working in transit or enforcement, the reality is simple: offline is the default, and sync is a luxury. In this talk, we’ll explore how to build offline-first applications using Python — apps that work gracefully when the network doesn’t. Drawing from real-world civic and infrastructure projects scenarios in Nigeria, I’ll walk through techniques to queue,

00:24:53

Nationwide Rollout of Matrix-Based Instant Messaging...

Chaos Computer Club - recent events feed ·

2025/10/16

On July 15, 2025, Germany’s statutory health insurance funds will introduce the Matrix-based instant messaging service TI-M (Telematikinfrastruktur Messenger) into their electronic patient record (ePA) apps. This marks a significant milestone, as Matrix-based messengers will become potentially available to 74 million insured individuals across Germany. This talk will provide an overview of the nationwide rollout, highlighting the technical and organizational challenges faced during the development

00:44:54

Element Call: Redefining conferencing for privacy,...

Chaos Computer Club - recent events feed ·

2025/10/16

Element Call, the flagship MatrixRTC application by Element, is shaping the future of secure, federated calling. As the successor to the traditional call system in Element apps, it now powers large-scale, end-to-end encrypted (E2EE) group calls with improved reliability and seamless federation support. This talk follows up on last year’s introduction of Element Call, showcasing a year of rapid innovation — from new media transport mechanisms to enhanced mobile features — all aimed at making secure

00:30:40

Functional Python: Saving Christmas with itertools &...

Chaos Computer Club - recent events feed ·

2025/10/16

Are you writing nested loops when solving coding challenges? Discover how Python's functional programming toolbox can transform your problem-solving approach. We'll explore functional programming principles through the lens of Advent of Code puzzles, learning to think in streams of data rather than step-by-step instructions. We’ll explore some essential bits from `itertools`, `functools`, and `operator` modules, aiming to write more expressive, debuggable code. Starting with pure functions and lazy

00:14:08

Trialing Matrix within the European Commission for...

Chaos Computer Club - recent events feed ·

2025/10/16

Looking for more resilience and sovereignty, the European Commission has been running a trial Matrix deployment. This talk will present some of the work done. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/MDHBPY/

00:26:20

Famedly – Secure Communication in Health Care with...

Chaos Computer Club - recent events feed ·

2025/10/16

Nobody likes fax machines, yet everyone still uses them – that's the reality in German hospitals. Since 2019, Famedly has been challenging this status quo. With our TI Messenger, built on the Matrix protocol, we've created a secure and decentralized alternative. Learn how we're using and extending Matrix to modernize communication in the German healthcare system. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event:

00:44:00

SIP/Element: Unifying Telephony and Modern...

Chaos Computer Club - recent events feed ·

2025/10/16

Our project's main goal was to fill a gap by developing a telephony bridge that natively integrates XiVO enterprise telephony (based on SIP) within the alternative and open-source Matrix/Element ecosystem. Our focus with this bridge is to offer a credible and high-performing alternative to dominant proprietary solutions, such as Teams and its "Telephony System" licenses. XiVO SIP bridge project presented a significant development challenge, underscoring its disruptive and creative nature. This

00:43:50

Matrix as a Bridge (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

European healthcare communication is at a turning point. Fragmented national systems are reaching their limits, while the need for interoperable, secure, and user-friendly digital spaces across borders continues to grow. This talk explores how the open-source Matrix protocol has become a strategic foundation for secure messaging in healthcare — powering derived solutions like TI Messenger and CGM Messenger. Our approach highlights not only the technology itself but also the importance of

00:44:38

Consolidating Germany’s administrative communication:...

Chaos Computer Club - recent events feed ·

2025/10/16

The German public administration aims to consolidate its disparate solutions for G2C and G2B communications and transition to a unified yet decentralized Matrix-based infrastructure. In this talk we will dive into this new federal infrastructure’s target architecture and explore its key requirements, drivers and architecture decisions – including the crucial choice of Matrix as the E2EE communications layer. We further share key learnings from the accompanying political process and reflect on the

00:23:29

NeoBoard S: a whiteboard matrix client offering...

Chaos Computer Club - recent events feed ·

2025/10/16

Last year, we introduced NeoToolSuite, Nordeck’s productivity suite of Matrix widgets designed for efficient collaboration and communication. This year, our focus shifts to our flagship product: NeoBoard Standalone. This real-time collaborative whiteboard matrix client has evolved through continuous development and iteration and now it features an immersive infinite canvas that redefines what’s possible for open-source productivity and creative tools. Join us for a tour of NeoBoard’s latest

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