A cake gets eaten. The memory stays.
It's the 8 characters printed on the little card in your box — letters and numbers, no spaces.
4 to 8 numbers. You'll need it if you want to edit this page later, so pick something you'll remember.
Hold the charm flat against the back of your phone — near the top on an iPhone, in the middle on most Android phones. Nothing at all? The code above always works, so you're never stuck.