Icons can be more intuitive than text for quick visual guidance, especially in forms where users might not know certain information, like the CVV/CVC code on a credit card. Tooltips can be helpful but require an extra mouse action and may not work smoothly on mobile devices. Using an icon—a graphic of a credit card showing the code location, for example—can immediately clarify what's needed. If there's still potential for confusion among your audience, consider pairing the icon with a tooltip for extra clarification.^[1]