Within 8 days of signing up to one of our plans, you'll receive an email with a unique promocode (+ an SMS to remind you). Simply share this promocode - either by forwarding the email, writing it down, or verbally - with a PCO driver friend, and when they visit one of our hubs, they must state the promocode to a member of the Otto Team. Then, the Otto Team will verify the code and approve it there and then with the driver.