FlockProof Makes a Car Return Light to Its Sender

Field notes

The optical effect is attributed to microscopic glass beads sealed beneath a smooth clear face, with a thin metal mirror behind each bead. The page says the film returns aimed light toward its source while appearing ordinary from other angles and when unlit. Its proposed formats are a colored vehicle wrap, clear paint-protection film, and a removable cover for private property. Durability and paint-safe removal are presented as release targets, so the preorder represents a product still subject to testing.