TagTinker

TagTinker is a Flipper Zero app for exploring infrared electronic shelf-label (ESL) protocols. It allows you to transmit custom images and text to supported graphics tags. A companion web image preparer runs entirely in the browser and lets you drop, dither and download Flipper-ready BMPs without any install.

This tool is built for IoT security curiosity, learning about obscure protocols, and displaying digital art on e-ink hardware.

Features:

• TagTinker Flipper App: High-performance, zero-allocation RLE streaming IR engine.
• TagTinker Image Prep (web): Single-file, dependency-free HTML page that lists every supported tag profile, runs a full image pipeline (tone, contrast, detail, sharpen, dither, photo-grade Oklab 3-colour quantisation) and exports a Flipper-ready BMP. Hosted at i12bp8.github.io/TagTinker (source: web-image-prep/).
• Drop-folder image flow: Drop a prepared BMP into apps_data/tagtinker/dropped/ on the Flipper SD card, then open Targeted Payloads ? <tag> ? Set Image and pick it. The Flipper rescales any BMP on the fly so a single file can target any tag and any page.
• NFC Tag Scan: Instantly identify ESL targets by scanning their NFC tag — no manual barcode entry needed.
• WiFi Plugins (optional): Plug a Flipper WiFi Dev Board (ESP32-S2) into the GPIO header to unlock live, network-rendered tag designs — crypto price cards, weather tiles, identicons, and more — auto-discovered by the FAP. New plugins live entirely on the cloud worker; the Flipper firmware never has to be re-flashed to add one.
• Display text, custom images, and test-patterns.
• Support for monochrome and accent-color (red/yellow) graphics tags.