A marijuana vending machine has started operating in the Canadian city of Vancouver.

Accepting cash only, it sells a variety of pot to people who need it for medical purposes.

Users have go through an approvals process before they are allowed to buy from the machine. A doctor has to certify that the individual needs to use marijuana as part of the vetting.

Vancouver police have said that they will not target the city’s pot dispensaries – as long as they are only selling to people with medical permits.