Today’s invention is a form of Velcro in which the side with hooks and the side with loops are held apart by some extra long ‘hairs’ made of the same material -but longer.
These hairs act as springs so that the Velcro will mesh and join only when the two sides are forced together sufficiently strongly. The hairs are sparse and thin enough not to obstruct the normal hooking process when the faces get close enough.
The force required to join the strips can be preset by altering the length of the hairs.
This would help avoid the problem associated with the hooks side becoming attached to and removing clumps of eg wool from passing sweaters.