I thought these we such a cool idea. They are a big help for changing the settings on my phone. I have mine set to turn on my wifi when I walk through the door. It has saved my data on my phone from being overused. I like the fact that there are already stickers on the backs on the NFC tags and that there is a protective and waterproof seal to them. This is available on Amazon . I received this product at a discounted rate in exchange for a honest review.