Hand it to the CEO of a SaaS. The front is a sealed document — they can pull out their phone, open the URL, and verify it themselves. That's the pitch in 5 seconds.
The recipient doesn't read about the product — they verify the card. They see the badge, scan the QR, land on a real verdict page in 0.42s. The pitch happens before you finish your sentence.
Hand both cards. One is sealed (verifies clean). One has a digit changed in the amount (verifies as tampered, amber). They get to feel both sides of the value with their own thumb.