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

Ask The Experts Forum

BlogsAsk The Experts ForumIs It Possible to Erase a Programmable Chip?

Is It Possible to Erase a Programmable Chip?

Posted By Mark Roberti, 01.17.2011
Is such an action possible with a radio frequency identification system?

—Name withheld

It depends on the type of RFID system you are using. Passive low-frequency (LF), high-frequency (HF) and ultrahigh-frequency (UHF) solutions, as well as active systems, all have a variety of protocols that govern how tags and readers communicate. But generally speaking, the answer is yes, you can usually erase or "zero out" data (that is, replace a serial number with all zeros).

With passive UHF tags based on EPCglobal's second-generation air-interface protocol, there are several types of memory: tag ID memory, Electronic Product Code (EPC) memory and user memory. Tag ID memory is usually written to a tag when the microchip is manufactured, and is not alterable. EPC memory can usually be written and locked so that it can not be changed, but if you write the EPC to your own tags, you can choose either not to lock them, or to allow them to be unlocked. And the same is true of user memory—you can leave it unlocked, lock it so that it can be unlocked with a password, or permanently lock it so that it can't be changed.

—Mark Roberti, Founder and Editor,
RFID Journal

Login and post your comment!

Not a member?

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

Next Post
Are There Any RFID Suppliers in Egypt?
Previous Post
How Can I Monitor Which RFID Tags Are Cl...
Case Studies Features Best Practices How-Tos
Live Events Virtual Events Webinars
Simply enter a question for our experts.
RFID Journal LIVE! RFID in Health Care LIVE! LatAm LIVE! Brasil LIVE! Europe RFID Connect Virtual Events RFID Journal Awards Webinars Presentations
© Copyright 2002-2017 RFID Journal LLC.
Powered By: Haycco