How do these 'door blockers' work, and is there an equivalent in real life?

Through the whole game, I've wondered what are those and how they work. I don't see how that thing blocks the door from being opened or destroyed, but since I haven't seen an instance in the game where they seem not to have worked, they probably worked pretty well.
Also while we are at it, do these 'door blockers' exist in real life?
Best Answer
The reason this type of door blocker would be effective is due to the pressure created by extending the arms. Assuming the metal used is strong and the arms are extended as far as possible, the pressure of the device would exceed the pressure that any person would be able to exert on the door. That said, I believe a blocker like this would be more effective due to its versatility. A lock like this would be used on a door that could not otherwise be locked effectively, because all you have to do is place it and extend the arms. (i.e. it wouldn't have to be built into the door)
Of course, if the door itself is weak (as an ordinary wooden door would tend to be, as in your screenshot), I don't think it would be too terribly difficult to bypass this device by just destroying the door itself.
A similar door blocker is also used in Soma.
In game design terms, this is just to prevent your forward progress, naturally. It looks better than an ordinary door that you are unable to open for no reason. This way, it looks like there's actually a reason you can't open the door.
Also, for the record, I can't find any real life equivalent, but I am like 90% positive they exist. I feel like my problem is I don't know what these devices would actually be called...
Pictures about "How do these 'door blockers' work, and is there an equivalent in real life?"



Can you use a doorstop to lock a door?
By placing the doorstop at the top of the doorway instead of the bottom, they work as a temporary lock. You can use any wedge-shaped piece of wood in place of a designated doorstop. You can even whittle a stick or block of timber that's lying around your yard.The Game - How We Do (Official Music Video)
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