Flipdiscs

Hacker News users voted 191 times for a post about Flipdiscs—physical, electromechanical displays that flip between colors—sparking a rare debate about why digital screens feel soulless compared to their clunky predecessors. Unlike the smooth, pixel-perfect OLED panels in modern smartphones, Flipdiscs offer a tactile, 7-segment-style visual that is 30% more energy-efficient than an LCD of the same size, per a 2025 industry report.