RFID Vulnerabilities

Wired ran an article this month about the vulnerabilities of RFID tags. Ed Vielmetti picked up on this in his blog and adds a few other useful resources. RFID has seemed quite cool for a while, though a bit intimidating on the big brother front. These concerns, though, raise a real question about how reliable RFID may be. The Wired article seems a bit alarmist to me, given that it focuses its libraries comments on an institution that decided not to implement RFID anyway. Are institutions that do move ahead doing so without “locking” tags and addressing these issues?