An old iPhone 8 is used as a solar-powered OCR processing server.
The setup successfully processed over 83,418 OCR requests and handled 48GB of images.
It operates entirely off the grid, achieving annual electricity savings of $84-120 CAD.
The Apple Vision framework used is locally based, offering privacy benefits compared to cloud services.
The project demonstrates energy independence, e-waste reduction, and privacy-focused local computing.
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