[mahrain]

The TiO2 will likely rub off and need regular replenishment. Also, the alternative here, sensor-operated or button-operated automatic doors are already widely used. I wonder who this is meant for?

[vimda]

This is probably easier to install or retrofit than an automatic door, seeing as it self powers

[interludead]

Motion sensors and push plates aren't perfect, but they remove the contact vector entirely instead of trying to mitigate it after the fact