Each year in the U.S., over 164,000 emergency room visits and 300 deaths are caused by falls from a ladder. Inspired by his father, Paul Stentiford has invented a simple device that makes climbing ladders safer. A general contractor, Paul and his son developed six prototypes over two years and are now moving their product to market. Paul remembers helping his father on carpentry jobs when he was four years old, and remembers him always figuring out how to make using tools less dangerous.