David Chaum is Managing Director of DigiCash bv in Amsterdam, a firm pioneering electronic cash payment systems, and is chairman of the European Union Research Project CAFE, which is investigating electronic money.

He received his Ph.D. in computer science from the University of California at Berkeley, and taught at New York University Graduate School of Business Administration and at the University of California before accepting his present positions. He founded the International Association for Cryptologic Research, and serves on the editorial board of its journal

David Chaum can be reached at:
fax: +31 20 6685486
e-Mail: amd@digicash.nl
www: digicash.support.nl/index.html.