Scratch the gray bar below at the bottom of the QR Code Security System sticker and you’ll find the 13-digits random numbers. Then visit our official web site at http://www.lannafootpatch.com and click at Product Check. Fill the following numbers and finish submitting the security system. It will show that you have purchased the Real Product if the verifying sentence goes green, otherwise the message will turn red if the product is the Counterfeit One. Please note that once the numbers has been verified, the same number cannot be used again. This is for our security system only to make sure that NO ONE will ever copy our numbers to create the COUNTERFEIT PRODUCTS.