OS ID develops, manufactures and sells livestock identification products. Our identification systems secure the animal`s identity from birth to slaughter enabling traceability and documentation throughout the whole value chain. The development of safe, animal-friendly and effective tagging is our primary goal - because it is important to our customers. Today, OS ID® is an international, leading manufacturer of livestock identification systems, with customers in several parts of the world.

Company details

Verjåfaret 1 , Oslo , NO-2550 Norway

Locations Served

Business Type:
Industry Type:
Agriculture - Livestock
Market Focus:
Globally (various continents)

High-tech product development 

Our customers' requirements are constantly changing, not least because of the present day demand for safe food. With its high-tech expertise, OS ID® is at the forefront of these requirements. We maintain close contact with our customers and collaborating partners, and their feedback is incorporated into the development of future livestock identification products. As we are a leading product developer, we hold several important international patents. 

Consistent quality 

For us, it's all about excellence every step of the way. We call this consistent quality. We are certified both quality-wise and environmentally, and we know that this means a lot to our customers.

Tagging living livelihood 

Farm animals are living assets - they are the farmer's means of production. Livestock husbandry is the subsistence, as well as the bread and butter of the livestock owner, the individual consumer, and society at large. We have been tagging living assets since 1936.

It all started with milk churns … 

It was farmer’s son Karstein Horten who was the inspiration behind OS ID® in 1936 when he hammered out his first ear tags from the handles of discarded milk churns.

The product turned out to be as simple as it was brilliant. During the first year, several hundred ear tags were sold to farmers in the surrounding area. Today, OS ID® is an international, leading manufacturer of livestock identification and we have customers in several parts of the world.

These days, OS ID® is a modern technology company run by Karstein Horten’s granddaughter, Wenche Wikan Ligård.