The trouble with two-factor authentication is that it tends to be a nucleus around which a monoculture of security procedure forms. It is convenient to have a single sign-on that is believed to be beyond reproach, even if that sign on is a bit more obnoxious than the old username + password combo.
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The trouble with two-factor authentication is that it tends to be a nucleus around which a monoculture of security procedure forms. It is convenient to have a single sign-on that is believed to be beyond reproach, even if that sign on is a bit more obnoxious than the old username + password combo.
Until your two-factor system gets hacked, as happened to RSA: http://bits.blogs.nytimes.com/2011/04/02/the-rsa-hack-how-th...
The more common a security system is, the more attractive a target it is for professional (organized crime) hackers to attack.