Delta Air Lines introduced bag-tracking on Delta.com in April and now has introduced the service on its Fly Delta Android and iPhone apps.
Once you download the free apps, you can access the Track My Bags feature by entering your bag tag number and last name.
Users of the iPhone app alternately can merely choose to scan the barcode on their luggage receipts to register and get tracking under way, according to the Delta Air Lines blog.
Read full story at: http://www.tnooz.com/2011/11/22/mobile/delta-air-lines-goes-mobile-with-bag-tracking/