Move data between two devices via QR codes and an HTML page

· Adafruit Industries Blog · May 27, 2026, 6:49 p.m.
Software utility Smartphone Mobile phone data transfer QR codes offline technology software development
Summary
ShadowCat is a unique, offline HTML page designed for transferring data between two devices using QR codes, specifically targeting older phones with non-functioning radios but still capable of using their cameras and browsers.
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