They are becoming a reality! Thank you Nike!
According to the company:
“…Slip a switch, and the shoe tightens as if you just pulled and tightened conventional laces. The switch activates a motor that rolls or unrolls a spool of wire distributed throughout the shoe. When the spool reels in the wire, the shoe tightens along axis supported by various rods.”
So far Nike has only filed for the patent, so it will be a few years before they hit shelves. In the meantime, please stick to velcro as to avoid salad fingers.