It locks the apps you don't want anyone to access when using ur phone..password secured. It takes a picture of the intruder who tries to opens it. Hahahahaha. Great thinking yet very funny.
Most Popular Search Engines as derived from our eBizMBA Rank which is a continually updated average of each website's Alexa Global Traffic Rank, and U.S. Traffic Rank from both Compete and Quantcast.
I think Google is the most popular and best search engine ever. It will be more easy and useful for you if you know the tricks of using Google Search Engine.