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# TagTinker
# 🛠️ TagTinker
<p align="center">
<strong>Educational ESL research tools for Flipper Zero</strong><br>
<sub>Protocol study, signal analysis, and controlled display experiments on authorized lab hardware</sub>
<strong>Educational Infrared ESL Research Tool for Flipper Zero</strong><br>
<sub>Protocol study • Signal analysis • Controlled display experiments on authorized lab hardware</sub>
</p>
<p align="center">
<img alt="License: GPL-3.0" src="https://img.shields.io/badge/license-GPL--3.0-blue.svg">
<img alt="Platform: Flipper Zero" src="https://img.shields.io/badge/platform-Flipper%20Zero-orange.svg">
<img alt="Status: Research Project" src="https://img.shields.io/badge/status-Research%20Project-informational.svg">
<img alt="License: GPL-3.0" src="https://img.shields.io/badge/License-GPL--3.0-blue.svg">
<img alt="Platform: Flipper Zero" src="https://img.shields.io/badge/Platform-Flipper%20Zero-black.svg">
<img alt="Status: Research Project" src="https://img.shields.io/badge/Status-Research%20Project-informational.svg">
</p>
---
<img src="https://github.com/i12bp8/TagTinker/blob/main/demo.jpg">
<p align="center"><sub>Owner-authorized lab ESL display experiment</sub></p>
## Overview
TagTinker is an educational electronic shelf label (ESL) research project for Flipper Zero.
It is intended solely for:
- protocol study,
- signal analysis,
- interoperability research,
- and controlled display experiments on ESL hardware that you personally own or are explicitly authorized to test.
This project is maintained as a home-lab and research tool. It is **not** intended for use against deployed retail systems, commercial infrastructure, or third-party equipment.
<div align="center">
<img src="https://github.com/i12bp8/TagTinker/blob/main/demo.jpg" width="600" alt="TagTinker Demo">
<p><sub>Owner-authorized lab ESL display experiment</sub></p>
</div>
---
## Important Notice
## ⚠️ Important Notice
Use this project **only** on hardware that:
**This project is strictly for educational and research purposes only.**
- you personally own, or
- you have explicit permission to study and test in a controlled environment.
You may use TagTinker **only** on ESL hardware that:
- You personally own, **or**
- You have **explicit written permission** from the owner to test in a controlled environment.
Do **not** use this project:
### ❌ Strictly Prohibited
- Using in retail stores or any commercial environment
- Targeting deployed retail systems or third-party equipment
- Altering prices, product information, or operational displays
- Interfering with commercial operations
- Bypassing pairing, authorization, or security measures
- Any unauthorized, unlawful, or harmful activity
- in stores,
- on deployed retail systems,
- on third-party equipment,
- on production infrastructure,
- to alter prices, product information, or operational displays,
- to interfere with commercial operations,
- to bypass pairing, authorization, access controls, or security measures,
- or in any manner that is unlawful, unauthorized, or harmful.
The publication of this source code does **not** grant permission to access, modify, transmit to, or interfere with any third-party system or device.
> The publication of this source code does **not** grant permission to access, modify, or interfere with any third-party system or device.
---
## Project Scope
## 📋 Project Scope
This repository is limited to research and lab use, including:
TagTinker is limited to home-lab and research use, including:
- educational study of infrared ESL communication,
- display and protocol experiments on authorized test hardware,
- local tooling for preparing monochrome display assets,
- controlled diagnostics and signal observation for interoperability research.
- Infrared protocol study and signal analysis
- Controlled display experiments on authorized test hardware
- Local tooling for preparing monochrome display assets
- Educational diagnostics and interoperability research
This README intentionally does **not** include installation, deployment, targeting, or operational instructions for use against deployed systems.
This README intentionally does **not** include installation, targeting, or operational instructions for deployed retail systems.
---
## Features
## ✨ Features
- Lab-only ESL protocol study tools
- Controlled display experiments for authorized test hardware
- Single-device research functions for text, image, test-pattern, and LED-response experiments
- Local image preparation utility in `tools/tagtinker.html`
- 📝 Text, custom image, and test-pattern display experiments
- 🖼️ Local web-based image preparation utility (`tools/tagtinker.html`)
- 🔬 Single-device protocol study and LED response tools
- Clean, modular codebase for further research
---
## Responsible Use
## 🔒 Responsible Use
TagTinker is published for legitimate educational, research, and interoperability purposes only.
You are solely responsible for ensuring that any use of this project complies with applicable law, property rights, and required authorizations.
You are solely responsible for ensuring that any use of this project complies with:
If you do not own the hardware or lack explicit permission, **do not use** this project on it.
- applicable law,
- property rights,
- contractual restrictions,
- operator policies,
- and all required permissions and authorizations.
If you do not own the hardware or do not have explicit authorization to test it, do not use this project on that hardware.
Misuse is strictly prohibited and entirely at your own risk.
---
## No Affiliation
## 🔗 No Affiliation
This project is an independent research effort.
This is an **independent research project**.
It is not affiliated with, endorsed by, authorized by, or sponsored by any ESL manufacturer (including Pricer), retailer, or system operator.
It is **not** affiliated with, endorsed by, authorized by, or sponsored by any ESL manufacturer, retailer, or system operator.
Any brand names or product names referenced in the source tree or documentation are used only where necessary for descriptive, compatibility, or research purposes.
Brand names are used only for descriptive and research purposes.
---
## Security and Disclosure
## 🙏 Credits
This repository is intended to support lawful research and interoperability work.
If you are a vendor, operator, or security researcher and believe some part of this repository raises a concrete security concern, please open a responsible disclosure issue or contact the maintainer privately with sufficient detail.
This project is a port and adaptation of the excellent public reverse-engineering work by **[furrtek (PrecIR)](https://github.com/furrtek/PrecIR)** and related community contributions.
---
## Distribution Policy
## 📄 License
This repository contains source code for research purposes.
To reduce the risk of misuse, this project does not provide:
- hosted binaries,
- prebuilt application files,
- automated deployment packages,
- or step-by-step operational instructions for use on deployed systems.
Licensed under the **GNU General Public License v3.0** (GPL-3.0).
See the [`LICENSE`](LICENSE) file for details.
---
## Credits
## ⚖️ Warranty Disclaimer
This project builds on public reverse-engineering research by [furrtek](https://github.com/furrtek/PrecIR) and related community work.
This software is provided **"AS IS"**, without warranty of any kind, express or implied.
Please see the upstream project for prior research context and historical protocol analysis.
In no event shall the authors or copyright holders be liable for any claim, damages or other liability arising from the use of this software.
---
## License
## 👤 Maintainer Statement
Licensed under **GPL-3.0**.
See [`LICENSE`](LICENSE) for details.
This repository is maintained as a narrowly scoped educational research project.
If this project incorporates or adapts GPL-covered upstream work, the corresponding notices and licensing terms apply accordingly.
The maintainer does **not** authorize, encourage, or condone any use against third-party devices, deployed retail systems, or any environment without explicit permission.
**Research responsibly.**
---
## Warranty Disclaimer
This project is provided **“as is”**, without warranty of any kind, express or implied, including but not limited to merchantability, fitness for a particular purpose, and noninfringement, to the maximum extent permitted by applicable law.
---
## Maintainer Statement
This project is maintained as a narrowly scoped educational and research repository.
The maintainer does not authorize, encourage, or condone use against third-party devices, deployed retail systems, or any environment without explicit permission.
*Stay curious. Hack ethically.*