Two-Step Authentication Process
Betfair’s two-step authentication reduces the chance of having your account compromised.
That’s because in an addition to your username and password Betfair will ask you to enter a one-time code, which will be sent to your phone via SMS or displayed by the Google Authenticator application for iPhone, Android, Blackberry and Windows Phone. This authentication scheme protects against a range of attacks and eliminates the risk of insecure/easily guessable passwords or shared password being leaked from other websites you use.
This feature is important if you care about the security of your account. When you have enabled Betfair’s two-step authentication, attackers not only have to know/guess your username and password but also guess an additional one-time password, which changes every 30 seconds. It is practically impossible to perform this type of attack due to the computational complexity it carries. With two-step authentication your Betfair account will have the best protection available.