Before 9/11, airlines and security personnel — and I use the term “security personnel” loosely — might have let a nickname or even a maiden name on a ticket slide. No longer. If you have the wrong name on your ticket, you’re probably grounded. And there are two reasons for this: security and greed.

The Transportation Security Administration wants to be sure the same person who bought the ticket, and who was screened, is boarding the plane. But when there’s an inexact match, the airline can either charge a $100 “change” fee or force you to buy a new ticket. In an industry where every dollar counts, the exact-name rule is the government’s gift to cash-starved air carriers.