Today’s invention is for athletes of all standards working on a climbing wall.
Shoes and gloves would each be fitted with a small coloured lamp.
Hand and footholds would each have an array of four different coloured LEDs (recessed, but visible).
A trainer could remotely activate a pair of lamps on foot and foothold to indicate were best to step next (or even challenge the wearer to do non-standard moves). This process could also be automated and the speed of ascent adjusted to the experience level of the climber in question.