How can you tell if you have an immobilizer key?

You can tell if you have an immobilizer key by checking for a transponder chip embedded in the key, which is often visible as a small plastic or metal piece near the key's head. Additionally, if your vehicle requires a specific programming or synchronization process when starting, it likely has an immobilizer system. You can also refer to your vehicle's manual or consult a dealership to confirm if your key is equipped with an immobilizer.