In this piece Develop a Sixth Sense About IT..., which completes the expression with:

... with software that measures the effectiveness of your programmers. You won't need extrasensory perception to know how well your application development teams are working if you use a new tool that keeps tabs on their activities, claims Pamela Roussos, vice president of marketing at 6th Sense Analytics Inc. in Raleigh, N.C.

At the the heart of this is software that monitors which files are open and ergo tracks their use and editing. I'm not quite sure when covert monitoring became a sixth sense though.