That's an interesting article.

In Minority Report (a Steven Spielberg movie starring Tom Cruise) it is nice to see that anywhere Cruise goes, whether it in the street, car or mall, there are personal-intended ads which are directed exactly at him. I guess that if that was the end of the tracking chips usage, it'd be alright (at this point in time, I have no problem with being located).

The only scary thing is, as written in the article, if hackers or business enemies or any other baddie gets ahold of one's personal information. On the other side, it could easily help in the war against terrorism (when most of the times you know who wants to hurt you and when, but you've got no idea where they are).