How Can I Track Insects Via RFID?

By RFID Journal

  • TAGS
Ask The ExpertsHow Can I Track Insects Via RFID?
RFID Journal Staff asked 10 years ago
I am seeking a transponder that can be attached to a small insect. The bugs measure less than 2 millimeters (0.08 inch) in size. I need to be able to read the transponders from long distances—at least 5 meters (16.4 feet). Any idea how this can be accomplished?

—Name withheld


I don’t believe that this is possible. A transponder that is only 2 millimeters in size would have a very tiny antenna. Antenna size relates directly to read range, because a smaller antenna can not harvest as much energy from a reader as a larger antenna can. So a transponder that small would have a read range of just a few millimeters.

Perhaps one of our readers might know something I don’t, however. If anyone is aware of a tiny passive tag that can be read from a distance of 5 meters or more, and that would be useful for this particular application, please post information about it below. Thanks.

—Mark Roberti, Founder and Editor, RFID Journal

Login and post your comment!

Register Now

Not a member?
Signup for an account now to access all of the features of!

Previous Post