Does P3P limit the need for other privacy technologies likeencryption or Web anonymizers?
Definitely not. In fact, in order to “do one thing, and do it well” we focus P3P on its mission of establishing privacy disclosure and defer to other privacy technologies for communications and storage confidentiality. For instance, users must be able to express preferences such that, “I will only give my credit card information to sites over a secured communication channel such as SSL or SET.” We don’t attempt to reinvent anonymizers, encryption or payment protocols within P3P but it will be able to work with all of these things.