Originally Posted by dukeman
I know a father and son with the same name that share FF numbers. As a result the are top tier on an airline. The only challenge is that they can never travel together. I'm actually surprised the airline never realized this since they often have trips to the same location a day apart or to different locations on the same day!
it probably depends on the airline's software.
A few years ago, I did a mileage run in one day. 3 LGA-BOS shuttle flights all in one day. A few days later, I noticed my online acct status had been locked out. I called customer service and was told their system was alerted to a possible abuse/fraud. It turned out that some of the 3 identical LGA-BOS roundtrips set it off.(the last BOS-LGA was credited TWICE) It resulted in an audit of my acct.
Fortunately, the agent cleared it up pretty quickly.