This topic is arguably one of the top 2 or 3 most important in the area of Privacy, and certainly a top topic in the business ethics area, although Ms. Albrecht would probably say the term "Business Ethics" is an immediate contradiction in terms.
As a marketing educator, I have placed this book on my syllabus for an E-Commerce course I teach, with the following reservation - it is entirely too celebratory of the author. IMO, this book was written with a self-promotional Erin Brockovich overlay I found off target. Its impact would be greater if it stuck to the facts, which are compelling and striking.
As an ex-Corporate marketer, I found Ms. Albrecht's methodology of tracking company's actual patents (IBM, Motorola, etc.), versus their reactive 'positioning statements', a very useful technique for cutting through the Corporate double-speak, especially when it related to corporate denials of consumer level tracking, when their own patent applications are directly FOR such applications.
As for the content, while some reviewers here poo-poo the 30 to 50 foot range of reading individual product 'spy chips' on clothing using today's technology, I think the range is perfectly adequate for trucks driving by most neighborhoods taking readings off such chips - just as many gas, water and electric meters are read today, as utilities change to RFID devices from manual reading. And the history of technology is that the the ranges and accuracy will improve.
What I take from this book is as follows. RFID, while very useful at the "Supply Chain"/pallet level in increasing distribution efficiency and effectiveness, is very troubling when applied to consumer level packaging. It is worse still when applied at the identity card (passport, member card, and drivers license)level, and we must tread carefully there.
In America, citizens and consumers should have a choice in being on or off 'the grid', it is fundamentally no one's business how products are used, or where you are located. This is why as marketers we use proxies such as research surveys to gather voluntary information on use patterns, and why we are trained in statistical inference. Even the non-voluntary current scanner data does not track you outside the purchase area.
This is an important issue that will not be resolved quickly.