Interesting. The same sensor used to dim the display when you hold it up to your face could activate this tweak. Not sure of the effect on battery life since it would have to be continually running. Instead of the shake option for activator, it may be interesting to flip the phone in certain directions to activate one of numerous apps. If anything from the galaxy phones, Id like the nfc stickers to turn my bluetooth on and off when I get into my car, as well as a wifi one for when I step into my home. I just leave wifi and bluetooth on and still get good battery life, but itd be nice to have these easily activated actions. I know sbsettings can do this but I just leave it on. My blackberry had a utility installed to automatically silence my phone when my calendar said I was at work. I overslept once and my work was unable to get ahold of me since I was asleep and my phone set itself on vibrate. Not sure I need that sort of "convenience" haha