It's far out there but I've always wondered why cell phones do not have a solar panel or other form of charging from a light source.
I've heard of displays being able to act as a solar panel at the same time. Complicated yes but the concept and idea is there. Calculators use light, yea a cell phone uses more power but with the size of screens now. Why not incorporate solar charging in the phone. Even if it only helps sustain a charge over time it's a major benefit.
Just...Go away.
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