Photo 1 of 2

View all

Coupa Cafe customers can buy items with bitcoins
Mike Landau, left, a Facebook software engineer who helped develop the technology for retail bitcoin transactions, and Jean Paul Coupal, right, owner of Coupa Cafe, look over the digital transaction on Landau's phone on July 16, 2013. Photo by Veronica Weber.

© 2017 Palo Alto Online.
All rights reserved.