Today is March 25th, 2026. I'm writing this down so there's a public record.
Spotify launched Page Match last month (conveniently 10 days after i launched Radioposter and had a little viral success). Amazon has been running Whispersync for years thinking ebooks and audio are the best. Both of them are circling the same waters we've been swimming in at Radioposter, and I think it's only a matter of time before one of them (or both) sees what we’re doing, how it works, how we’ve solved some of the more intresting UX challages, and tries to generally copy it. So let's get a few things on the record while it's still ours to say.
Spotify's Page Match Is Cool. It's Not a New Medium.
On February 5th, Spotify announced Page Match in partnership with Bookshop.org. The feature lets you point your phone camera at a page in a physical book, and using OCR, it identifies the passage and jumps you to that spot in the audiobook. You can pick up listening where you stopped reading, and vice versa.
That's a nice trick. Seriously. Not bad product work tapping into something people probably shared they would like. But let's be clear about what it actually is: a bookmark with a camera.
Page Match solves a logistics problem. You were reading on the train, now you want to listen in the car, and Spotify helps you find where you left off. Great. But the book isn't doing anything differently. The audio isn't doing anything differently. They're the same two products they always were. You're just switching between them with less friction.
That's not a new medium. That's a feature update.
Radioposter isn't switching you between two things. We built one thing. The book and the audio are fused. The soundtrack responds to your page turns in real time using computer vision. It doesn't help you find your place. It creates the place. The music shifts, the ambient sound builds, the score follows you through the story the way a film score follows a scene. Except you're holding paper.
Spotify reduced friction. We created a new canvas.
Amazon's Whispersync: Still Pixels, Still a Screen
Amazon has been syncing Kindle ebooks and Audible audiobooks for years through Whispersync. You read a chapter on your Kindle, open Audible on your phone, and it picks up right where you stopped. It's slick. It works.
But it's all screens. Every part of the Whispersync experience lives on a digital device. You're reading pixels on a Kindle, then listening through an app on your phone. The "book" is a file. The "page" is a render.
There is no paper in Whispersync. There is no physical object. There is no page to turn.
Radioposter starts with the actual book. Ink on paper. A thing with weight and smell and texture. And we use the phone's camera and other signals (found in something you already own) track pages and synchronize a real-time audio experience to your reading. No e-reader required. No special hardware in the book. The book is just a book. But when you open the Radioposter app, it becomes something books have never been before.
Amazon syncs two digital products. We sync the physical and the digital into something new.
We're Not Arrogant About This. But We Know What We Built.
I want to be careful here because I'm a guy in Omaha running an indie publishing company, and I'm writing a blog post about two of the largest technology and media companies on Earth. I don't have delusions about the power dynamic. Or that they probably don’t give a damn about little ole Radioposter.
But I also know what we've built. Radioposter has solved hard problems in experience design that neither of these companies has touched yet. How do you use a device everyone has to reliably detect which page someone is on in a physical book? How do you handle the latency so the soundtrack feels natural and not reactive? How do you design a book and audio experience that works whether someone reads fast or slow, whether they skip back or pause for coffee? How do you reimagine the book so it works best with this vision.
I’ve been working hard on these questions for years now. Our debut title, Forest Bathing for Punks, shipped in February 2026. It works. People page through a paper book and hear a soundtrack that follows their pace in real time. That's not a pitch deck. That's a product on someone's coffee table.
And the canvas is wide open. Imagine journalism with ambient audio layers that shift as you move through an investigation. Poetry collections with generative scores. Art books where the music changes with each plate. We didn't just solve a sync problem. We opened up a medium. Paper-fi. Print and audio working together, in real time, on actual paper.
Artists and storytellers deserve this canvas. We're going to keep building it.
This Blog Post Is Evidence
Let me be direct about why I'm publishing this today.
Spotify just launched a feature that uses a phone camera to connect physical books with audio. They partnered with a bookstore to do it. They're clearly interested in the space where paper meets sound. Amazon already owns Kindle, Audible, and the largest book distribution network on the planet. They've been syncing text and audio for a decade.
Both of them have the engineering teams, the content libraries, and the money to build what Radioposter has built. And if they do, I want this post sitting here with a timestamp.
March 25th, 2026. We called it.
We have a granted US patent. We have a continuation-in-progress (CIP) provisional filed as of March 12th, 2026, expanding the IP as the technology evolves. Our patent is not a thin wrapper around an obvious idea. It covers the system and method including a computer vision pipeline, page detection, and real-time audio synchronization. The stuff that actually makes this work.
But let's be honest about the math. Spotify and Amazon have legal budgets that could probably fund Radioposter's entire operation for the next fifty years. If one of them decides to build this and fight us in court, they have armies of patent attorneys and I have... well, I have Claude. Literally. An AI is basically my legal team, my strategy partner, my co-writer. I'm not joking about that.
But Here's What They Can't Buy
They can't buy authenticity. They can't buy the origin story: this idea was born in a garage in Omaha, not in a product review meeting in Mountain View, Stockholm, or Seattle. They can't buy the community of readers and artists and weirdos who believe that paper deserves new superpowers.
If Spotify or Amazon builds a version of this, they'll build it as a feature inside their existing platform. It'll be optimized for engagement metrics and subscription retention. It'll be smooth and polished and utterly forgettable. It'll exist to keep you inside their app.
Radioposter exists to get you out of the app and into the book. Offscreen.
That's the difference. And that difference only matters if people care about it. If readers support the indie publisher over the trillion-dollar platform. If artists choose to build for a medium that respects the physical object instead of trying to replace it.
This is a "we the people" situation. Not in some cheesy revolutionary way, but in the very practical sense that Radioposter survives if people buy Radioposter books. If they don't, it doesn't matter how good the patent is. The big guys will circle, clone, and suffocate. That's what big companies in 2026 do.
So here's the play. We keep building. We keep publishing. We keep putting paper-fi into the world one title at a time, from Omaha, with an AI legal team and a budget held together with duct tape and stubbornness. The reason them copying our idea is dumb is because we know they won't give us credit. We know they'll get press coverage and act like it's their genius idea for the future of books.
So if Spotify or Amazon reads this someday and recognizes what we built before they did, well. This blog post is the receipt.
With Love,
Casey