Tinkerers that break things instead of fixing them

There’s a guy at work that loves to fiddle with stuff. Trouble is, once he tinkers with things, they never work the same again. Just this month he’s “fixed” three things in our office:

*He did something to our shredder-- now it turns on and runs all by itself.

*After working on the copier/fax/scanner, it no longer sends scans via email properly.

*Most importantly, he messed with the software settings for our security work station and blew away the templates to enroll new users.

This is all extremely irritating to say the least.

Do you have an “anti-tinkerer” in your life?