the ability to adjust travel itineraries from their mobile device . Delayed Delta passengers who miss a connection now can immediately rebook a different flight and download a new boarding pass , all while in the air . The airline has some new app plans up its sleeve as well . Delta declines to give a release date for the feature , but it is close to unveiling a new tool where travelers can track checked baggage from their mobile devices , according to Delta spokesman Paul Skrbec . -LRB- They can already do so on the airline 's website . -RRB- The airline eventually could offer other services on its mobile app that are already listed on its website , such as the ability to search for hotel and car rental reservations , Skrbec said . GuestLogix , a company that creates onboard merchandising technology , is already trying to integrate these services into an airline app with the launch of its OnTouch Mobile Concierge platform , which it pitched to major airlines this week , a company official said . The mobile app does not just offer access to itinerary details , but it also functions as a
-LRB- CNN -RRB- -- Airline passengers are already able to check in to flights , download boarding passes , select a seat on the go and keep an eye on the upgrades list thanks to recent evolutions in smartphone technology , and the options just keep growing . A global industrywide Airline IT Trends Survey shows that more than 90 % of the airlines surveyed are increasing their investment in mobile capabilities to ease the hassles of getting through the airport and improve the in-flight experience . And the airlines are likely to find a way to generate revenue , too . So what 's a flier to expect from airline apps on the horizon ? In the not-too-distant future , you 'll probably be able to rent a car , pay bag fees and use augmented reality to find the nearest airport bar through your airline 's smartphone app . Delta Air Lines is putting emphasis on improving mobile functionality . While some airline apps allow travelers to make flight reservations -LRB- a feature that Delta has not introduced but promises is coming -RRB- , the world 's largest carrier is one of the few airlines that gives customers