Home Internet of Things Aerospace Apparel Energy Defense Health Care Logistics Manufacturing Retail

Ask The Experts Forum

BlogsAsk The Experts ForumHow Would I Deactivate RFID Tags?

How Would I Deactivate RFID Tags?

Posted By RFID Journal, 03.16.2018

I have a Nordic ID Sampo S1 reader and I'm trying to figure out how to deactivate a bunch of RFID tags simultaneously. My use case is as follows: A user picks up a couple of products from the shop, then places those products on the reader (10 items, for example). The reader then identifies all tags and provides their tag ID numbers.

How could I deactivate all tags at once? I vaguely understand, from your resources, that with an access password, a reader can deactivate or kill tags. But could the device deactivate multiple tags at once? Please help me clarify this—and also let me know if it is possible to do this with a Sampo S1 reader.

—Relix

———

Relix,

A passive UHF RFID reader can never communicate with more than one tag at a time. That being said, the reader communicates with tags very quickly, so it often appears that 50 tags or more are being read simultaneously.

To deactivate the tags, the reader would need to receive each tag's serial number, send a password to unlock the memory block where the kill command password is stored, and then transmit the kill command. This process would be repeated for each tag. With 10 tags, it could take a second or two to complete the process. With 100 tags, it would obviously take longer.

I hope that answers your question, and I hope to see you next month at RFID Journal LIVE! 2018.

—Mark Roberti, Founder and Editor, RFID Journal

USER COMMENTS

Louis Parker 2018-04-23 02:27:35 AM
Hi Relix, Some tags also support a privacy mode feature which put the tag into a short range mode - the tag would have to be bery close to the antenna to be read - if this works for you then it’s typically much faster than the kill command pricess - usually just writing a couple bits to reserve memory. Regards, Lou Parker SLS RFID Solutions https://www.slsrfid.com/contact/

Login and post your comment!

Not a member?

Signup for an account now to access all of the features of RFIDJournal.com!

Next Post
How Would I Lock EPC Data in Passive UHF...
Previous Post
Is FCC Approval Required for Passive UHF...
PREMIUM CONTENT
Case Studies Features Best Practices How-Tos
RFID JOURNAL EVENTS
Live Events Virtual Events Webinars
ASK THE EXPERTS
Simply enter a question for our experts.
TAKE THE POLL
JOIN THE CONVERSATION ON TWITTER
Loading
RFID Journal LIVE! RFID in Health Care LIVE! LatAm LIVE! Brasil LIVE! Europe RFID Connect Virtual Events RFID Journal Awards Webinars Presentations