locking a folder and keeping it private has never been so easy and secure,1st we used to just right click and then gointo properties, then into hide.... and then in folder option we used to click on : "donot show hidden files"; but this is a very common technique, which can be easily identified.As the technology improvised, more and more techniques of hiding a folder came to light such as those mentioned below:1. hiding access to a folder by creating an "invisible" icon.2. hiding access to a folder by encrypting it and making it unreadable.3. hiding access to a folder by password protecting it.but not all or most of them arent meant to be the best secure way of hiding it. still the technology has to evolve and then v can expect for a better way/best way of hiding a folder from unwanted access.