Canadian developer Maxime Rivest combined the reMarkable Paper Pro tablet with Anthropic’s Fable 5 AI model to recreate one of fiction’s most iconic enchanted objects. Handwritten prompts literally fade from the E-Ink display, and the AI responds in kind with handwritten-style text that appears as if a ghost is writing back.
TL;DR: Canadian developer Maxime Rivest combined the reMarkable Paper Pro tablet with Anthropic’s Fable 5 AI model to recreate Tom Riddle’s diary from Harry Potter. Handwritten prompts fade from the E-Ink display, and the AI responds in kind with handwritten-style text. The project demonstrates how E-Ink tablets can simulate magical experiences through AI integration and custom software.
What Is the Tom Riddle Diary Project on reMarkable?
The project transforms the reMarkable Paper Pro into a working replica of the haunted diary from Harry Potter and the Chamber of Secrets. Users write questions by hand on the E-Ink display. The ink then gradually fades away, simulating the diary “drinking” the words. Moments later, handwritten-style responses appear on the page as if the diary itself is replying.
This effect closely mirrors the scene where Harry Potter discovers that text written in the diary vanishes and a mysterious entity writes back. Rivest’s version replaces dark magic with a large language model. The LLM processes the handwritten input, generates a response, and renders it in a handwriting font on the E-Ink screen.
The reMarkable Paper Pro is uniquely suited for this project. Its monochrome E-Ink display already resembles aged paper. The tablet’s stylus input feels natural for writing in a physical notebook. Combined with custom software that controls ink animation timing, the result looks remarkably like the cinematic depiction of Riddle’s diary.
Android Authority described the project as turning the E-Ink tablet into “Tom Riddle’s diary from Harry Potter” through a custom mod built around the Fable 5 model. The disappearing ink effect is the central visual trick. It sells the illusion completely.
How Does Fable 5 Create the Disappearing Ink Effect?
Fable 5, Anthropic’s AI model designed for creative and narrative tasks, handles the conversational intelligence behind the diary. When a user writes a prompt on the reMarkable Paper Pro, custom software captures the handwritten input and converts it into text. This text is sent to the Fable 5 model via an API connection. The model then generates a response.
The disappearing ink effect itself is not generated by the AI. It is handled by the custom software layer running on or alongside the reMarkable device. The software animates the original handwritten text, gradually reducing its opacity until the words vanish entirely. This creates the impression that the diary has absorbed the ink.
Once the user’s text fades, the software receives the AI-generated response from Fable 5 and renders it on the E-Ink display using a handwriting-style font. The text appears stroke by stroke, simulating someone writing live on the page. The combination of fading input and appearing output creates a seamless conversational loop.
TechRadar noted that the tool makes the diary “drink your ink” and reply with handwritten notes, calling it “one of the smartest e-reader features” seen on the platform. The project effectively bridges natural language processing with visual storytelling. Fable 5 provides the conversational brain. The custom software provides the magical presentation.
Who Built This AI-Powered Magical Diary?
Maxime Rivest, a Canadian developer, built the project and shared it publicly on X (formerly Twitter). His original post read: “Fable turned my remarkable into Tom Riddle’s diary from Harry Potter. My prompts fade, a LLM respond. Magical!” The post included a video demonstration showing the effect in action.
Rivest combined several technologies to achieve the result. He used the reMarkable Paper Pro as the hardware canvas, Anthropic’s Fable 5 as the language model, and custom code to handle the ink animation and text rendering pipeline. The project appears to be a personal experiment rather than a commercial product.
Moneycontrol described the project as “a stunning Harry Potter tribute” that gives fans “a real-world taste of magic.” The demonstration video circulated across technology publications including Android Authority, TechRadar, and Notebookcheck, drawing attention from both Harry Potter enthusiasts and E-Ink tablet communities.
Rivest’s work fits into a broader trend of developers using consumer hardware in unconventional ways. The reMarkable Paper Pro is designed for note-taking and reading. Rivest repurposed it as an interface for interacting with an AI model in a way that emphasizes atmosphere and immersion over raw functionality. The project shows what is possible when developers treat hardware as a creative medium.
What Hardware Do You Need to Replicate This Project?
The core hardware requirement is the reMarkable Paper Pro tablet. This device features a color E-Ink display designed to replicate the feel of writing on paper. It includes a stylus that provides natural handwriting input with low latency. The tablet runs a Linux-based operating system, which allows for custom software development and modification.
The reMarkable Paper Pro launched at a retail price of $579 USD. It is the successor to the original reMarkable tablet, adding color display capabilities and improved processing power. The device connects to Wi-Fi, which is essential for sending handwritten prompts to the Fable 5 API and receiving AI-generated responses.
In addition to the tablet itself, replicating the project requires access to Anthropic’s Fable 5 model through an API connection. Developers need programming knowledge to create the custom software layer that handles ink animation, text capture, and response rendering. The reMarkable’s open platform makes such modifications possible, though the exact code Rivest used has not been publicly released as a standalone package.
The reMarkable Paper Pro is not the only E-Ink tablet on the market, but its paper-like display quality and developer-friendly ecosystem make it particularly well-suited for this type of project. Competing devices like the Kindle Scribe or Boox Note Air offer similar functionality but may require different software approaches. The reMarkable’s Linux foundation gives developers deeper control over the display and input systems.
How Does the AI Respond in Handwritten Text?
The Fable 5 system generates responses that appear as handwritten text directly on the reMarkable Paper Pro display, creating an illusion that the diary itself is composing replies. According to Android Authority’s coverage, the AI produces handwritten-style notes that materialize on the page after the user’s original prompt fades away. The effect mirrors the cinematic behavior of Tom Riddle’s diary from the Harry Potter films, where words appear autonomously on aged paper. The handwriting synthesis happens locally on the tablet’s display layer. This creates a genuinely unsettling experience.
Moneycontrol’s report describes the transformation as a “stunning Harry Potter tribute” where the notebook becomes an interactive artifact. The LLM generates contextually relevant responses to whatever the user writes, then renders those responses in a handwriting font that matches the diary’s aesthetic. TechRadar notes that the diary effectively “drinks your ink” — the user’s handwritten input dissolves while the AI’s response emerges in its place. The interaction feels conversational and alive. Users write questions and watch the page answer back.
The technical mechanism involves coordinating the disappearance timing with the response generation, so the transition feels organic rather than mechanical. The fading effect operates on the e-ink display’s refresh characteristics, which naturally lend themselves to gradual visual transitions. This synchronization between input removal and output appearance distinguishes the project from a simple chatbot interface. The result is a tactile, paper-based AI conversation. No keyboard, no screen tapping — just pen and page.
Can You Install Fable 5 on a Standard reMarkable Tablet?
Fable 5 was designed specifically for the reMarkable Paper Pro, and there is no indication from any source that the software runs on earlier reMarkable models such as the reMarkable 2. The Paper Pro’s color e-ink display and updated hardware specifications appear to be prerequisites for the handwriting rendering and fading effects that define the experience. Standard reMarkable tablets use monochrome displays with different refresh characteristics. This matters for the visual effect.
The developer, Maxime Rivest, demonstrated the project exclusively on the reMarkable Paper Pro hardware. According to Bhaskar English’s coverage, the combination of the Paper Pro tablet with Anthropic’s Fable 5 model represents the specific configuration required. There is no publicly available installation package, APK, or sideloading instructions published as of the current reporting. The project remains a personal demonstration rather than a distributable application. You cannot simply download and install it.
Antyweb’s reporting characterizes the gadget as something that “exists, sort of” — emphasizing that while the Tom Riddle diary experience is functional, it is not a commercial product available for consumer installation. The reMarkable Paper Pro runs a Linux-based operating system, which technically allows modification, but replicating Rivest’s work would require significant development effort. The color display of the Paper Pro also contributes to the visual fidelity of the diary effect. Older monochrome models cannot replicate the parchment-toned aesthetic.
What Are the Privacy Implications of an Always-Listening AI Notebook?
The Fable 5 Tom Riddle diary implementation raises significant privacy considerations because it transmits handwritten user input to Anthropic’s cloud-based language model for processing. Every written prompt — regardless of content — gets sent to external servers for AI generation. The reMarkable Paper Pro itself does not process language models locally. All text leaves the device immediately.
Notebookcheck’s coverage describes the system as one where handwritten input disappears and is replaced by AI-generated responses, which inherently means the content must be transmitted, analyzed, and returned through network infrastructure. Users writing personal, sensitive, or confidential information in the diary would be sharing that data with Anthropic’s processing systems. The always-on nature of the diary interaction means there is no intermediate privacy filter. Whatever you write goes to the cloud.
Neither Rivest nor Anthropic has published a privacy policy or data handling disclosure specific to this Fable 5 implementation. Standard Anthropic API usage terms would presumably apply, but the project’s experimental status means data retention, training usage, and processing boundaries remain undefined publicly. The reMarkable Paper Pro’s built-in cloud sync already transmits handwritten notes to reMarkable’s servers, so the Fable 5 integration adds a second data pathway. Users concerned about privacy should consider both transmission points carefully.
How Does This Compare to Other E-Ink AI Integrations?
The Fable 5 Tom Riddle diary represents one of the most creative e-ink AI integrations demonstrated publicly, but it is not the only instance of artificial intelligence appearing on electronic paper displays. Several e-reader and e-notebook manufacturers have begun incorporating AI features into their products. The reMarkable implementation stands apart because of its narrative concept. Most competitors focus on productivity instead.
Amazon’s Kindle Scribe and Kobo’s Elipsa offer handwriting recognition and conversion, but these tools simply transform handwritten notes into digital text — they do not generate original responses. Boox Note Air devices run Android and can access ChatGPT through browser interfaces, but the interaction remains a conventional chatbot experience displayed on e-ink rather than an integrated writing surface. The diary concept introduces a fundamentally different interaction paradigm. You are not querying a chatbot — you are conversing with a page.
What distinguishes the Fable 5 project is the deliberate aesthetic and experiential design. The disappearing ink effect, the handwriting-style responses, and the literary framing as Tom Riddle’s diary create an emotional and narrative dimension that productivity-focused AI tools lack. TechRadar’s coverage emphasizes that this is “one of the smartest e-reader features” precisely because it transforms the device into something beyond a notebook. The project demonstrates that e-ink AI integrations can prioritize wonder over utility.
Will Anthropic Release Fable 5 Publicly for Consumer Devices?
Anthropic has not announced any plans to release Fable 5 as a consumer-facing product for reMarkable tablets or any other e-ink devices. The project originated as a personal creation by developer Maxime Rivest, who combined the reMarkable Paper Pro with Anthropic’s Fable 5 model independently. No official partnership between Anthropic and reMarkable has been disclosed. The demonstration remains a solo development effort.
Bhaskar English reports that the project combines the reMarkable hardware with Anthropic’s AI model, but the coverage does not indicate any commercial roadmap or productization timeline. Rivest’s original post on X describes the experience as “magical” but frames it as a personal experiment rather than a product preview. Anthropic’s public API offerings include Claude models for developers, but Fable 5 is not listed among the company’s commercially available products. The model appears to be an internal or specialized tool.
The absence of installation instructions, source code repositories, or distribution channels further suggests that public release is not imminent. reMarkable as a company has not commented on the project through official channels. The reMarkable Paper Pro’s modding community may eventually produce similar implementations using available LLM APIs, but an official Fable 5 release would require Anthropic’s direct involvement. For now, the Tom Riddle diary exists as a compelling proof of concept. Whether it becomes something more remains unanswered.
Frequently Asked Questions
What AI model powers the Tom Riddle diary on reMarkable?
The Tom Riddle diary implementation runs on Anthropic’s Fable 5 model, as confirmed by Bhaskar English’s coverage and Maxime Rivest’s original post on X. Fable 5 is not part of Anthropic’s publicly listed commercial API offerings, which include the Claude model family. The model processes handwritten prompts transmitted from the reMarkable Paper Pro and generates contextual responses rendered as handwritten text on the e-ink display.
Does the disappearing ink damage the reMarkable display?
No evidence from any source suggests that the disappearing ink effect causes damage to the reMarkable Paper Pro’s e-ink display. The fading effect is a software-driven visual transition that leverages the natural refresh characteristics of e-ink technology, as described by Android Authority and TechRadar. E-ink displays do not suffer from burn-in issues the way OLED panels do, making repeated fading and redrawing cycles safe for the hardware.
Can I buy a pre-configured Tom Riddle diary tablet?
No commercial product or pre-configured Tom Riddle diary tablet is available for purchase. Antyweb’s reporting explicitly frames the project as something that “exists, sort of” — a personal creation by developer Maxime Rivest rather than a retail product. There is no installation package, no storefront listing, and no announced partnership between Anthropic and reMarkable to bring this experience to consumers.
Does the diary feature work without an internet connection?
The Fable 5 diary feature requires an internet connection to function because the language model processing occurs on Anthropic’s cloud infrastructure rather than locally on the reMarkable device. According to Notebookcheck’s description, the system transmits handwritten input to the AI model and returns generated responses — a process that depends on network connectivity. The reMarkable Paper Pro does not have sufficient onboard computing resources to run a large language model independently.
Summary
The Fable 5 Tom Riddle diary project represents a striking convergence of literary imagination and practical AI integration on e-ink hardware. Several key points define this project:
The experience is real but not accessible: Maxime Rivest demonstrated a working Tom Riddle diary on the reMarkable Paper Pro, but no public installation method exists for other users to replicate it.
Fable 5 is not a commercial Anthropic product: The model powering the diary is not available through Anthropic’s public API offerings, and the company has not announced consumer availability.
The reMarkable Paper Pro is the only confirmed hardware: Earlier reMarkable models lack the color e-ink display and hardware specifications that enable the diary’s visual effects.
Privacy considerations remain unaddressed: Every handwritten prompt leaves the device for cloud processing, and no data handling policy has been published for this specific implementation.
The project proves e-ink AI can prioritize wonder over productivity: Rather than another note-taking assistant, the diary demonstrates that AI integrations can create emotionally resonant, narrative-driven experiences on electronic paper.
For more coverage of AI implementations, e-ink technology, and developer projects, follow along at gikiewicz.com.