it can be referenced to see the true and false bar codes of shoes. The bar code has its unique ID card, origin and manufacturer! But I don't think it's the only way. Quality is the most important thing. First, pick up this pair of shoes, head to tail, and see if they are the same size. Secondly, look at the stitches and the thread. Most of the vamps are double-stitched, and the thread and stitch distance are neat and without inclination. Again, look at whether the adhesive on the vamp and sole is exposed and the glue is open. Finally, look at whether the vamp cutting piece and the rubber sole are mottled and overflow! This is the easiest way. As a brand product, Nike will also have high quality requirements. When it reaches the above standards, it can basically be genuine.