It’s often said that when a motorcyclist gets a leather suit, gloves and boots on they feel protected and this allows them to ride less carefully.
If they were riding nude, my guess is that they would be driving everywhere at under 30mph.
Today’s invention is a set of stick-on patches for a novice rider’s leathers (perhaps required by law for learners).
These would be transparent and allow the insertion of a photo print of the underlying section of a particular rider’s body. (I’d suggest that patches be applied to elbows and knees, which a rider can see in transit -although being exhibitionist, individuals might choose also to apply such patches to other parts of their anatomies eg those with particularly fine tattoos).
Being made constantly aware of their underlying, vulnerable skin surfaces would have the effect of causing people to take more care.