I DO have one but with small children around it's easier to hide the scissors, so they are not dropped too often. I originally got it to lock from my 40's son who uses everything for what ever he's working on at the moment he he
and what happens when one has a senior moment and forgets the numbers...
I try to hide mine but if I see they are in my husbands kit I just remove and take them back to their rightful home with me