What is form hint for?
A hint is a helpful little companion to a form field. They give you handy clues and directions about what's needed.
What is a hint field?
Hint Fields
It's possible to add a field to the front or back of a card, but make it hidden until you explicitly show it. We call this a 'hint field'.
What is hint text?
Use hint text to give users help in context - like where to find information or how their data will be used.