I'm think you wrong on that one. Financial cost and benefit are easily assessed on this, and I think the numbers add up. Credit card fraud costs in the hundreds of billions of dollars a year, much of which could be eliminated by a change to the sort of system I mention. That's not a small amount of money. Indeed, it is more than enough incentive for a major change.
Credit card fraud has gone *down* since 1992, and is actually falling: 1992: $2.6B 2003: $882M 2004: $788M We're on the order of 4.7 cents on the $100. http://www.businessweek.com/technology/content/jun2005/tc20050621_3238_tc024.htm If it's any consolation, I was rather surprised myself. --Dan --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
