Locational privacy
The Electronic Freedom Foundation's paper on locational privacy explores the privacy issues relating to automatic road toll devices and similar systems that check the locations of users. Such systems can be designed to incorporate locational privacy controls but this increases their complexity and cost - the question is whether that's justified by the privacy benefits.
It's also a moot point given that most of us already carry cellphones which can be tracked to a few city blocks or a few miles in open country.
It's also a moot point given that most of us already carry cellphones which can be tracked to a few city blocks or a few miles in open country.