Since its debut just two weeks ago, Apple's Passbook has begun to emerge from its sleeper status as the part of iOS 6 most users were befuddled by. With new companies getting on the bandwagon seemingly each day, it may not be long before nearly every iOS 6 user has a chance to understand better what exactly Passbook is and what it will do for them. It certainly has the potential to be one of those "how did I live before this?" type apps. In addition to Starbucks and quite a few airlines, a diverse group of businesses have recently added support.
