"Since I object to general surveillance, I use cash for ordinary retail purchases. I use a credit card only in the situations where I am forced to disclose my i

"Since I object to general surveillance, I use cash for ordinary retail purchases. I use a credit card only in the situations where I am forced to disclose my identity anyway: car rental, airplane tickets, and hotels." http://stallman.org/archives/2003-sep-dec.html http://stallman.org/archives/2003-sep-dec.html "If you buy by credit card, companies and governments can monitor what you buy, too. So I buy things with cash. If the business says 'no cash', say 'no sale'. http://stallman.org/archives/2010-nov-feb.html http://stallman.org/archives/2010-nov-feb.html "I never use self-checkout machines unless a store gives me no choice..." http://stallman.org/archives/2011-nov-feb.html http://stallman.org/archives/2011-nov-feb.html