Crampons are all very well for ice climbing, but today’s invention represents an attempt to upgrade them to something better than the era of heroes like Hillary had access to.
Imagine boots whose soles have an array of studs. These studs are in the shape of sharp screws of differing diameter.
When the studs sense that they are pressing against a surface, a motor in each boot rotates the studs in contact with the surface so that the boot is temporarily screwed to it.
Another sensor then detects any pronounced tension as the wearer attempts to lift the boot and rapidly unscrews the studs from the ice.
In this way, more secure contact is established when walking or climbing, even enabling someone to walk on overhangs or eg the roof of an ice filled cave.