Cottonseed oil is also the primary input in the production of Olestra, a frying fat that glides through humans without leaving a trace of fat or calories, and is also an important source of vitamin E for pharmaceutical producers.

NPR: Texas Cotton: 'Farmer Profits at Every Step'

But he believes that with more experimentation and tweaking, someone could easily access a significant fraction of hotel rooms around the country without leaving a trace.

FORBES: Hacker Will Expose Potential Security Flaw In Four Million Hotel Room Keycard Locks

This is a very serious vulnerability indeed, as it means that someone could get access to data stored on an iOS device without leaving a trace.

FORBES: New iOS Lock Screen Vulnerability Uncovered