TL;DR
TagTinker is a new application designed for the Flipper Zero device that allows users to interact with electronic shelf labels (ESLs) via infrared communication. These ESLs are e-paper displays used in retail to show product prices and information, and they typically receive updates wirelessly. The app was developed by [i12bp8], building on prior research by [furrtek] that uncovered the protocols these devices use for communication.