An increasing number of smart devices, such as smartphones and tablets, have been extensively adopted. Millions of mobile applications (Apps) have been developed and submitted on servers for consumers to download, and numerous users can access services through various types of mobile Apps. In-app purchase mechanism is the purchase within a mobile application, which let consumers quickly and conveniently buy digital content such as games, movies, music, eBooks, apps, ... etc. At present, most of in-app purchase mechanisms only support credit card. For consumers who don't own a credit card, we develop an in-app purchase mechanism using carrier billing. The new mechanism let consumers buy digital content quickly, conveniently and safely and be charged on their postpaid bill.
In-App Purchase One Time Password