NKT wrote:What do you mean? Like a set of sliders marked 1 to 5, and you line them up? That wouldn't be safe at all!
Now I even found a picture of such safe
The sliders are actually marked 0 to 9, and there are 6 of them, makes of 1,000,000 real possible combinations.
And the lock was certified by VdS (class 2), which means that it is quite safe.
http://www.burg-waechter.de/produkte-Bu ... CHKJB-EN-p