If you have ever used Obopay or even social networking site Facebook, chances are that you have interacted with your mobile phone with these sites in some manner with your phone. Obopay, is a little more obvious, but you receive text notifications when you send or received money on your mobile. Facebook sends text messages to your registered mobile phone number for you to validate your account, Obopay also uses multi-factor authentication to validate the user of its website using a phone call and spoken code, or a text with a message and a code that need to type in a webpage. This is called Out-of-Band Authentication and your bank may have implemented something similar for its Internet banking.
Yesterday, I researched and implemented text notifications when you perform an Reload or Add Money transaction on our issuing platform to your prepaid card using an interface to a SMS Gateway. Check it out below: I’m using my Nokia E71 here.