I want to use my sliding glass door as a main entry. How do I put a lock on it?

I have a tenant downstairs and right now he uses my front door to come in and I want him to go through the sliding glass door. It’s a double wide typical sliding glass patio door. Does anyone know where I can find a lock for it? Or a discussion forum talking about it? I can’t be the only person in the world wanting to do this, but no place I find sells them (Canadian Tire, Home Depot, Home Hardware, etc.)