Big changes for our favorite airport shortcuts: How TSA PreCheck, Clear, Global Entry are evolving

For years, TSA PreCheck and Global Entry have been staples for frequent flyers hoping to speed through the airport. If you travel enough, you're probably familiar with Clear, too.But lately, there have been a ton of changes with all three programs.We've seen new versions of old travel hacks and high-tech upgrades to some of our favorite time-savers.The good news: A lot of these new (or improved) shortcuts won't cost you anything extra.But it can be a lot to keep track of — even if you're a seasoned traveler.And that's what we're here for. Let's quickly walk through our favorite airport shortcuts, how they're changing and how they can save you time before (or after) your next flight.TSA PreCheckMillions of travelers already use and swear by TSA PreCheck, which remains one of the best ways to get through Transportation Security Administration checkpoints.TSA PreCheck gets you access to the expedited lanes, which typically have shorter lines. You can also keep light jackets on and leave liquids in your carry-on bag.Cost: $78 application fee; membership is valid for five years after you complete your interview and receive approval. You can also gain TSA PreCheck access through Global E...