title: How Do I Make an NFC Tag Open and App, or Website Where No App Present
body: <p>I want to have my NFC tags open my app on a user's device - where the app is installed. If the app is not installed however, I simply want it to take them to our website instead. Is there any way to write this logic into an NFC tag?</p>
  <p>As a bonus question, is there any way to write logic in that would allow it to launch different apps (depending on whether the device is Apple or Android), and failing both those checks, launch the website?</p>