The RFID “Strike Zone”

During a recent RFID asset tracking project I was talking with a client about how we would set up a system to identify items stored within a secure warehouse cage as they were transported though a doorway. Items would sometimes be carried by hand, and at others brought through using a common pushcart.

In explaining how we would set up the required reader and antennas, I came upon a great visualization that everyone understood. The strike zone.

In the client’s scenario, the items to be tracked and the employee’s badge on a lanyard were tagged with UHF gen 2 tags. In this, and most similar situations, all of the tags of interest would be somewhere between shoulder and knee height. This included the ID badge, a hand carried item, or an item transported on top of or on the lower section of a transport cart.

Now, whenever I explain a similar RFID system to a client, I refer to the “Strike Zone” and the concept is immediately understood.

As a Baltimore O’s fan, these days it seems easier to find the “Strike Zone” for an RFID implementation than it does finding the strike zone over home plate at Camden Yards!

Have questions – send them to and we may feature the answer here! Also, be sure to download Bill Poulsen’s article – 10 Best Practices for Implementing RFID.

By Bill Poulsen, Director of RFID at Barcoding, Inc.