31.   Frequent travelers must store it on laptops to use a digital wallet on the road.

32.   He collected frequent traveler points and enjoyed the perks that came with his accumulated miles, including comfortable airport lounges.

33.   In addition to miles, guests can earn points in the Cavanaugh Hotel frequent traveler program.

34.   In part because of its limited regional reach, the service has some irritating wrinkles, particularly for frequent travelers.

35.   Individual airports and airlines have taken matters into their own hands, contributing to what some frequent travelers perceive to be spotty and haphazard security efforts across the country.

36.   It had been one of those days to which any frequent traveler can relate.

37.   It called for using the smartcards and the latest in biometric technology to vet frequent travelers so security guards could spend more time checking out everyone else.

38.   Its long-distance business already knows the biggest users of long-distance service, and its calling card operations can reveal the most frequent travelers.

39.   Its purpose is to provide frequent travelers hassle-free entry into the United States.

40.   Many frequent travelers are alarmed that for at least several months, airport security will remain in the hands of private contractors and their poorly paid inspectors.