The basic idea is to craft a simple insert
to apply to the locks mechanism, which occupies the space exploited by the "shim"
This I'ble will show you how to prevent a shim ala Open Any Padlock
Tetranitrate style being used to open your padlocks.
With all those shims out there spawned by that I'ble, we need some means of preventing people from using them to gain access to our valuables.
These only take a second or two each to make and won't cost you anything...
Just like the shims...
You better be quick those shims are easy to make and the criminals are coming to violate your padlocks..What are you waiting for??