The medical ID that provides an easy way to access, manage and store unlimited health information. Free. MyID Tag features NFC and QR Code Technology to provide quick and secure access to your free MyID Profile.   MyID Tag is perfect for kids, pets, and weekend warriors. Create a free Pet Profile in the app and track when and where the Tag has been scanned.MyID Tag: How it works from MyID on Vimeo.Dimensions: 36mm x 41mm x 10.5mmWhat is NFC? NFC stands for Near Field Communication. It’s the same technology that is used in Apple Pay and most credit cards. It allows the secure transfer of information when in close proximity with a powered device such as a smartphone. It doesn’t require charging since it draws power from the phone when you tap it.