At the enterprise level using only traditional usernames and passwords to secure your network is simply not enough. In 2013 52% of successful corporate network hacks used Brute Force & Dictionary attacks, with a further 21% breaking in using Stolen Credentials.
For these reasons many enterprises already use multi-factor authentication for that extra layer of security. Traditionally multi-factor authentication has been deployed using one-time-use tokens. Managing such tokens effectively has proven to be a tremendous hassle and financial burden on many organisations, only getting worse as the company grows.