Scanner

This is what I do at work... I scan images onto the computer... like really gross images of surgeries and experiments... and some charts and graphs.
The problem is that while I'm working through my folders of pictures, I sometimes find images that someone else had scanned onto the computer (it is a scanner for the entire floor) and had saved into my folders while I am away from the computer. Sometimes it's interesting to see what I find, but other times it's like... Why didn't they delete this? This has all of their credit card information on here. (don't worry, I delete them after I find them.) Basically, I like when I control the scanner and know where everything is going, so I don't have to do work for something that isn't even related to my job.