If the barcode of your Nike shoes can be scanned out through the mobile phone scanning software, then the shoes must be fake, because the barcode of real Nike shoes cannot be scanned out.
Authentic barcodes are composed of two vertical lines with different thicknesses, and other forms are fake.
There are only two kinds of barcodes as shown in the picture, one thick and one thin, and there will be no third kind.
You can also check the official website. Extended information:
Nike barcode observation method to detect counterfeiting:
1) The font of the authentic number 0 is sharpened at both ends, and the rounder 0 is fake.
2) The second barcode at the end of an authentic product must be thick. Otherwise it must be a fake.
3) The penultimate barcode corresponds to the fourth to last digit in the upc code.
4) Exactly half of the number under UK is exposed outside UK. ?
5) Half of the numbers below the EUR are exposed outside the EUR.
6) For the numbers under CM, the rightmost side of M coincides with the leftmost side of the number. Reference materials:
NIKE-Baidu Encyclopedia