A company in San Francisco has applied for permission to offer deliveries of cannabis by drone.

Trees Delivery wants to use the devices to bring packages of the drug to patients legally allowed to take it for medical conditions. Orders would be placed using the virtual currency bitcoin and delivered to to patients’ homes.

The firm has applied for approval to the Federal Aviation Administration to expand its existing road-based delivery services to include drones. The company’s co-founder Marshall Hayner told The Coin Telegraph: “As soon as the FAA passes the appropriate legislation we will have fleets in every state.