Sign up for anaccesscode at the source to give it a try for yourself, or take a stalker-esque trip down an Engadget editor's social network tracks at the second link below.
Mr. Bush: You should be able to instruct all of the doctors that you see to make your records available through a portal, and if you get stuck in an emergency room somewhere, there ought to be an emergency accesscode, that any doctor in the country can look up your chart.
Gmail service offers an option for users to access their email accounts using both a password, and a numerical code separately sent to the authorized user's mobile phone.
It signed a deal earlier this year to source phones from an undisclosed Asian contractor that will work with the carrier's chosen technology, code-division multiple access (CDMA).