If a security company says it is not possible that someone can unlock your door

[Luminous Animal]

and gain entry to your house, how do you prove that someone can? By leaving your own signature footprints that you were able to access someone else's locked door and their safe, and their safe room, and access to their baby monitor and their garage door opener.

You wear boots with a tread that says bernie and stomp around that house. You do this to expose a security lapse. Because if you can stomp around Hillary's house in your Bernie boots, surely, Hillary can stomp around your house.

[Luminous Animal]

1. And this from a redditer

You move into a rooming house. The amenities (kitchen, living room, etc.) are all shared space, but you have your own locked bedroom.

The landlord gives you two keys when you move in: one for the front door, and one for your bedroom.

Everything is going great, when you happen to discover that the key for your bedroom also opens one of your roommate's bedroom doors as well. You never go in their room. Worried, you tell the landlord about it.

The landlord insists that everything has been fixed, that your roommate's locks have been changed. You check periodically though, and it hasn't been fixed. Every time, you check that your key unlocks your roommate's door, then re-lock their door without ever going inside, and then tell your landlord about the issue.

What bothers you more at this point is that you realize that your roommate could possibly open your door, and that you or they could make copies of the bedroom door keys.

When the landlord insists that the issue has been resolved again, you are fed up. You go into your roommate's room and take pictures of yourself, standing inside their doorway, holding today's paper in your hand. You send the pictures to your landlord: "See? It's not fixed. I can still get inside".

At which point, your landlord freaks out, changes the locks on the front door so that you can't get into the house anymore (let alone your own bedroom), and says that you must prove that you destroyed all the pictures you took before even considering letting you back in the house.