This from an article by Tom Brown from Reuters yesterday:

Times have changed since U.S. money laundering laws were beefed up in the 1980s -- and more recently under the USA Patriot Act. Financial innovations such as "cyber cash" were one focus of an anti-money laundering conference in Hollywood, just north of Miami, this week.

Nevertheless, it could be years before electronic money and other sophisticated payment systems replace cash as a major money-laundering or terrorism-financing threat.