A long while back, American Express through it's Blue card line actually proposed the use of a card reader and physical token (the card for internet purchases).

A long while back, American Express through it's Blue card line actually proposed the use of a card reader and physical token (the card for internet purchases). It never took off. An article on such -- http://bits.blogs.nytimes.com/2008/12/05/a-credit-card-loses-its-high-tech-cred/?_php=true&_type=blogs&_r=0 http://bits.blogs.nytimes.com/2008/12/05/a-credit-card-loses... That said, their own site (at least when I last changed my password) had some fairly silly password rule restrictions like no punctuation.