Earlier quoted context omitted.
> Only some people have the skills and tools to open them - so they are useful at keeping most people out, No, not really. A large part of the security of locks comes from most people not knowing that they have the tools and skills to open them. It's like if everyone taped their door shut, and we depended on most people not knowing that tape is easily removed. My kid accidentally locked us out of the house the other…
Erm, maybe the locks in germany(europe) are different - but what you describe I only know from very old or cheap locks, no one would use for a front door (insurance would not accept that).
My front door is a pricey digital lock with a key for backup, and I don't think I could pick it with this method. That's why my first instinct was to try on our cheapest door.