You can purchase a key fob for your Model 3 for $150. Accoding to a few early reports the key fob doesn’t support summon or passive entry, it is unclear if it is because the car lacks the necessary components or if this will be something that they’ll activate via software later on. If these features are important to you, you probably are better off waiting.
Here is a video of the unboxing, paring, and demo of the Tesla Model 3 key fob.
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