Kaloyan Kolev and colleagues developed reFrame, an experimental camera that uses an ePaper display to show a single photograph at a time, according to the project's GitHub repository. The ePaper panel contains six pigments and dithers images before display, creating a halftone effect similar to newspaper prints and early video games, the developers said. Pressing the shutter initiates a 15‑second process in which electrical charges move ink particles into place, the team reported. The displayed image persists after power loss and can only be cleared by taking another photo, they added. Hardware specifications include a Raspberry Pi Zero, a Pi Camera 3 sensor, a 4‑inch eInk Spectra 6‑color display, and a battery, the repository notes. All software and documentation are publicly available on GitHub, allowing anyone to assemble the device from off‑the‑shelf parts, the developers said. The camera has been tested by four professional photographers through APOSSIBLE, but it is not currently sold; users can build their own units using the provided guide, and the developers hope to accept individual orders in the near future. The last photo remains on the screen when the device is not in use, enabling it to function as a desk photo frame, the team explained. reFrame represents a niche application of ePaper technology in consumer photography, the developers noted.