In this day and age, you have to take every possible step with regards to the security of your clients' personal information. There was a time when nothing more than a username and password was more than enough to secure an online account; unfortunately this information is easily hacked as most people use easy to remember information. When you add in another identifier to the mix you are creating a two factor authentication system that is virtually impossible to hack.
Two Factor Authentication is Now Widely Used
One industry that has been the target of many security breaches recently is the world of online gaming. Hackers will steal accounts, use them to generate in game currency that is then sold for cash to unsuspecting players for huge profits. Because of this most of top online gaming sites now use the two factor authentication system to protect player's accounts. This type of security can be used to protect many other online accounts and the software in your corporate network.