These 3D-printed objects can tell you if they’re being used properly
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MIT researchers developed ShiftLens, a 3D printing system that enables objects to change their visual appearance based on physical interactions like pressing, sliding, or turning — all without any electronics. The system combines lenticular lens arrays with patterned backplanes to create mechanically switchable surfaces. A user-friendly design tool automatically converts desired visual states and object shapes into printer-ready models for multimaterial 3D printers. Example applications include a chemical bottle that turns red when its cap is loose and a tic-tac-toe game with mechanically toggled squares. Potential uses span warning signs, smart packaging, industrial piping diagnostics, and rapid prototyping for artistic and engineering applications.
