Marked up boarding pass
One week ago, Sherri Davidoff dropped her wallet into an envelope and shipped it out. Then she boarded a plane:

After about a half hour, I got up to the JetBlue counter. I handed my boarding pass to the woman behind the counter and explained, “I don’t have my wallet. Do you think I’ll make it on the plane?”

“Oh,” she said. “You’ll make it. But go to the gate right away, because now they have to make a phone call.”

“A phone call?”

“They call someone in Washington, I think.”

Flying Without a Wallet