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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@allObjects
@PaddeK and @user81574, do you plan to share your final finger print reader code?
I think e-ink is a good application for displaying figer printes... after all, it is line graphics... (and not shades). Resolution though may be a challenge depending on the resolution of the e-ink display (you 'afforded').