now where did I put that book?

I'm hunting for a library book that I need to return.  where did I put it?  (and can technology help me find it?)

All of the library books I have are tagged with RFID chips, which is used for inventory control.  That should mean that I can use something like this 3M RFID locator device as a reader and scanner to locate a lost item. 

(And, at that point, I'm almost ready to put a chip in my glasses to help locate them.)

Comments

[Dave Pattern]

Hey -- why spend thousands of dollars on a 3M reader when you could build your own? :-)

http://eu.rfidshop.com/rfid-usb-pen-reader---iso-14443a-1356mhz-693-p.asp

I've just ordered one, so I'll let you know if it works. Most (all?) libraries use high frequency 13.56MHz chips, so I'm guessing it might work.

The main problem you'll have is that libraries use passive RFID tags, so the read range is limited to just a few inches (depending on how large a detection field you can generate).