Sounds like it could find things on my computer that I didn't even know was porn!"The Porn Detection Stick uses advanced image analyzing algorithms that categorize images as potentially harmful by identifying facial features, flesh tone colors, image back grounds, body part shapes, and more. With less than 1% false positive indications, your search for contamination on your computer won't waste your time."
Honestly, I'm not proud of keeping porn on my computer - I think it's a bad habit - but I don't have to worry too much about anyone stumbling across it because I keep it all in a heavily encrypted container. Unless this little USB stick is capable of doing what would take several months of codebreaking to do, I've little to fear of such a device.