One of those ubiquitous keys

I just saw this picture at Palestine Today:
It sure looks like a Palestinian Arab holding a deed to a house, presumably inside Israel, with the key to that house.

Now, I'm no locksmith, but if old Palestinian keys looked like that, it looks like anyone could get into anyone else's house. No grooves or teeth in the key?

And if the key is fake...what does that say about the deed?