Idea: up-to-date business card

Ole Tange at
Wed Mar 14 20:19:50 CET 2007

If I receive a business card it sometimes happens I try to call a year
later. At that point the person has a new phone number and I will have
to look that up. I would much rather receive an intelligent business
card that was always up to date.

To secure anonymity we will need a protocol that will allow me to get
the new information without everyone knowing I got that. It will be OK
if the original person is informed. Maybe using some kind of web of


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