eID Tags Explained: Complete Guide for Australian Farmers
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eID Tags Explained: Complete Guide for Australian Farmers
Electronic identification, or eID: is becoming the standard for livestock tagging across Australia. If you run cattle, you've been using eID tags for years already. But if you run sheep or goats, mandatory eID is either already here or coming soon, depending on your state.
This guide covers what eID tags are, how they work, why Australia is moving to mandatory electronic identification, and what you need to know to stay compliant.
What Is an eID Tag?
An eID tag is an ear tag with a built-in RFID (Radio Frequency Identification) microchip. The chip stores a unique identification number that can be read electronically using a tag reader or wand.
Most eID tags are dual-purpose: they have both the electronic chip inside AND a visual panel with printed information on the outside.
How Do eID Tags Work?
The RFID chip inside an eID tag is passive: it doesn't have a battery. Instead, it gets its power from the radio signal sent out by the tag reader:
- You hold a tag reader near the animal's ear (within about 30-50cm)
- The reader sends out a radio signal that powers up the chip
- The chip transmits its unique number back to the reader
- The reader displays or records the number
The whole process takes less than a second. Because there's no battery, the chip lasts the lifetime of the tag.
eID vs Visual-Only Tags
| Feature | Visual-Only Tag | eID Tag |
|---|---|---|
| Identification method | Read by eye | Scanned electronically + read by eye |
| Speed of reading | Slow, need to catch and read | Fast, scan in under a second |
| Accuracy | Prone to misreads (faded print, mud) | Highly accurate electronic read |
| NLIS database link | Mob-based (sheep/goats only) | Individual animal tracking |
| Cost | Lower per tag | Higher per tag |
| Required for cattle | No, eID mandatory | Yes, mandatory all states |
Why Is Australia Moving to Mandatory eID?
- Biosecurity: trace every individual animal within hours during an outbreak
- Food safety: paddock to plate traceability
- Market access: export markets demand full traceability
- On-farm management: track weights, treatments, breeding records
State-by-State eID Requirements
Cattle: All States
Electronic NLIS tags have been mandatory for all cattle movements in every state for years.
Sheep & Goats: State by State
| State | eID Status | Key Details |
|---|---|---|
| NSW | Mandatory | Individual eID mandatory for all sheep and goats from 1 January 2025 |
| Victoria | Mandatory | eID mandatory for sheep and goats since 2017 |
| South Australia | Mandatory | Mandatory for all sheep and goat movements |
| Queensland | In transition | Moving towards mandatory eID, check Biosecurity QLD |
| Western Australia | In transition | Progressing towards mandatory eID via DPIRD |
| Tasmania | In transition | Moving towards mandatory eID |
Approved eID Tag Manufacturers
- Allflex: the most widely used tag brand in Australia
- Leader Products, major Australian manufacturer
- FOFIA, competitive pricing and clear print quality
What Equipment Do You Need?
Tag Applicator
A standard tag applicator to apply the tags.
Tag Reader (Optional but Recommended)
A handheld wand or stick reader lets you scan individual tags. Panel readers can be mounted in races for automatic reading.
How to Order eID Tags
- Make sure you have a PIC
- Choose your species: cattle, sheep, or goat
- Choose your brand: Allflex, Leader, FOFIA, etc.
- Decide on quantity
- Place your order
We stock eID tags from Allflex, FOFIA, and Leader. Browse our range or get in touch if you need help.
Common Questions
Can I reuse eID tags?
No. Each eID tag is unique and linked to one animal.
Do eID tags work if they're dirty?
Yes, the electronic chip reads through dirt, mud, and manure without issues.
What if an eID tag falls out?
The animal needs a replacement tag before it can be moved. Contact your tag supplier or state authority.