RFID Tags - The What, Why, and How
Amy Barkley, Team Leader & Livestock Specialist
Southwest New York Dairy, Livestock and Field Crops Program

Radio frequency Identification tags, commonly known as RFID tags, are one of the USDA-approved official identification tags for cattle, deer, and swine. While not yet required by law, the use of these tags is increasing, with the goal being to have all producers using them. This article shares some information on what these tags are, how they work, and how you can order them for free for your herd.
What is an RFID tag?
These tags are technologically very simple. They are a button tag that shares a unique 15 digit ID number that will follow the animal through it's life. There are some non-official tags out there, and the official tag is what's called an 840 RFID tag. This tamper-evident tag sports the US shield, a 15-digit number starting with "840", the manufacturer's logo, the statement, "Unlawful to Remove", and an RFID chip embedded inside.
How does the tag work?
The individual number on the tag can be used by the producer for tracking in addition to standard ear tags. However, the tag number is also digitized on the RFID chip. This allows for quick identification of animals by officials using a quick scan should the animals need to be inventoried during a disease outbreak. By knowing where cattle are across the country and identifying cattle of unknown origin quickly, diseases can be contained rapidly, limiting spread to additional animals.
Who needs to use these tags?
NYS law states that all cattle moving across state lines should be permanently identified with a USDA approved ear tag. This can include an RFID tag. Even if not intending to move cattle out of the state, it's good practice to begin using them in addition to standard farm ID tags. Tags are free from Ag and Markets, so besides adding a line in your cattle records for this additional identification number, there's very little extra work needed on the producer's end.
Where can I get tags?
NYS Department of Ag and Markets supplies free tags and tag applicators to farmers across NYS. Forms can be found by visiting https://agriculture.ny.gov/system/files/documents/2023/01/ai-489_order_form_producer_ear_tags.pdf We have also included a form on the following page that you can fill out, cut out, and send in to NYS Ag and Markets.
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Driving Efficiency in Dairy & Exploring the Irish Experience
September 29, 2025
Rock Stream, NY
This workshop series will feature in-depth presentation and discussion led by Dr. Padraig French who is the Head of Livestock Systems and the Dairy Enterprise Leader at Teagasc (the Irish version of USDA). Dr. French will focus on the critical success factors for Irish dairy, which include pasture utilization, labor efficiency and managing for seasonal calving. The discussion will focus on ways that U.S. dairy farmers can use some of the Irish dairy techniques to become more profitable with grass farming.
Open Forum to Discuss Newly Approved DOL Trade, "Butcher"
October 2, 2025 : Open Forum to Discuss Newly Approved DOL Trade, "Butcher"
Partners from New York State Dept. of Labor, Cornell Cooperative Extension, Southern Tier West, and Workforce Development will be in the space to provide an overview of the new program, discuss the roles of hosts and apprentices, review the benefits of hosting an apprentice, and setting the vision for building a corps of highly skilled, modern trained Butchers and validating this career as a skilled trade with respectful earning potential.
Silvopasture on a Shoestring
October 7, 2025
Franklinville, NY
Join Joshua Greene, Director of Education at Trees For Graziers, Jonathan Bates, Statewide Agroforestry Educator, and Lynn Bliven, owner of Wild Geese Farm for a full day training event that will include classroom and hands-on sessions. The focus will be on DIY silvopasture projects on small grazing farms. We will address the practical considerations of tree establishment, protection, and maintenance while learning how silvopasture can help address your farm's resource concerns and enhance livestock grazing.
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