NIO's full-domain custom light show lets owners handwrite text or draw patterns on the car's center screen and project them onto the ground in real time through HDPL smart projection headlamps. Within 20 days of launch, users created more than 200,000 original designs, peaking at 23,000 per day, and the feature has drawn wide attention overseas. A five-level stroke-optimization AI algorithm keeps each owner's handwriting character while smoothing shaky input.

The feature marks a shift from parameter competition toward emotional value in smart cabins, with exterior lighting becoming a medium for personal expression. Similar animated signatures and welcome projections continue to spread across premium models worldwide. RINA TECHNOLOGY's door welcome lights and projection lighting modules bring comparable personalization to a wide range of vehicles.