With airline security getting tighter,travelers are being asked to leave bagsunlocked to make it easier for USTransport Security Administration (TSA)agents to inspect luggage. If the idea ofleaving your suitcases open makes younervous, take a look at new locks thatallow TSA agents to open them with aspecial code. Available at many airportgift shops for $5 to $10, about half amillion have been sold since lastNovember. Some TSAagents have been cutting off the locksrather than using the code to openthem. A new line of luggage fromTravelPro that offers built-in, TSA-approvedlocks should help do awaywith that problem.