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Feeds by speakers at Beyond Tellerrand conference Düsseldorf 2026

A public list by dan.

iA Valid
• iA Inc

Add Images Fast With Unsplash

High-quality images for iA Presenter

Hello my name is Niels Leenheer Valid
• Niels

Receipt Printers 101

Receipt printers are a complicated subject because of many variables. There are many different types of printers and ways to connect them, but this article will help you navigate most pitfalls. The answers and suggestions in this article are all based on my libraries, which are open-source and freely available for anyone to use and […]

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iA Valid
• iA Inc

Books That Shaped iA

Five books that helped us improving our writing, presenting, and design skills.

iA Valid
• iA Inc

The Art of Screenwriting

Interview with a script doctor

iA Valid
• iA Inc

How to Build Worlds, and Why...

...and where to begin?

iA Valid
• iA Inc

iA‎‎‎lice

The fourth of July is also Alice Day

iA Valid
• iA Inc

Books That Made Us

A selection of books about writing, presenting and design

iA Valid
• iA Inc

Why write?

A lifelong learning process that keeps us awake, sharp and connected

iA Valid
• iA Inc

Turning the Tables on AI

How about using it not to think less but *more*?

iA Valid
• iA Inc

Finding confidence

Practice, practice, practice

iA Valid
• iA Inc

Design as Thought

AI and the Future of Design

iA Valid
• iA Inc

Behind the gesture

Where do I put my hands while I speak?

iA Valid
• iA Inc

I Want You Back

(The Dropbox Remix)

iA Valid
• iA Inc

No Thanks

Apple makes the greatest ads... but not always

Hello my name is Niels Leenheer Valid
• Niels

Should we rely on browser detection?

This is the sixth and final chapter of “The problem with User-Agent strings “. In the previous chapters, we’ve learned that the User-Agent string is something that web developers should handle with care. Handle with extreme care because it could blow up in your face at any time. But if you knew what you did, you could use […]

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iA Valid
• iA Inc

Sharing Presentations Made Easy

iA Sharing is now available in iA Presenter for Mac (beta)

Hello my name is Niels Leenheer Valid
• Niels

The User-Agent Client Hints API

This is the fifth chapter of “The problem with User-Agent strings“. In the previous parts, we examined the history of the User-Agent string and browser vendors’ efforts to reduce its information. Removing details from the User-Agent string made passive fingerprinting much more difficult.  These efforts have been really effective because we are now in a […]

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Hello my name is Niels Leenheer Valid
• Niels

User-Agent reduction

In our fourth chapter of “The problem with User-Agent strings” we learn about some of the privacy advances that browsers have made in the last couple of years. Privacy on the Internet has become much more important over the last decade. All the prominent browser vendors informally agreed to limit the potential user-identifying information in […]

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Hello my name is Niels Leenheer Valid
• Niels

Trouble happens when you update a version number

In our third chapter of “The problem with User-Agent strings” we taking a look at the problems you run into when you change something in the User-Agent string. As I mentioned in the previous instalment of this series, the User-Agent string is built upon layers and layers of lies. Sometimes, when I look at a […]

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Hello my name is Niels Leenheer Valid
• Niels

A chapter of unnecessary detail

In our second chapter of “The problem with User-Agent strings” is a fascinating story about the browser wars. It’s a tale where the User-Agent string takes centre stage, revealing its unpredictable nature and the need for vigilance when relying on it.  The tale starts with me buying a new car back in 2016. Now, I […]

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