PCI and common access computers

["Flynn, Gary" <flynngn () JMU EDU>]

It has been suggested that these types of computers that people could use
to perform credit card transactions may be in-scope for PCI compliance
requirements. Anyone heard anything like that? I don't see how it could
ever work as you couldn't restrict the access to the credit card requesting
sites because they could be anywhere. And you really couldn't reliably 
prevent people from typing them either.