What about shoes with active vacuum gripping? What causes the falls? Is it just an extreme version of how the young fall but with more dire consequences? What

What about shoes with active vacuum gripping? What causes the falls? Is it just an extreme version of how the young fall but with more dire consequences? What about a device to rapidly and objectively measure if things are too slippery? Or a laser that can burn a decorative anti slip micro pattern into hardwood? Maybe an accelerometer that can males sound of you tip over, if the problem is inner ear and not noticing you aren't upright. Glasses with an artificial horizon to help low vision people who rely on sight to balance? Does the presence or absence of sharp lines on wallpaper and the like do anything to help one balance with visual cues?