Lightweight zip ties. One on each side of the chip looped through the bottom lace hole in the shoe. If you get the thinnest type there is room for the zip tie and the shoelace. Wait to tighten until the shoe is on your foot, then adjust both zip ties until the chip is centered and snug againt the shoe. Finish by cutting off the excess tie. It doesn't interfere with lacing, doesn't flop around and won't come off.