When the first camera-packing mobile phone appeared it revolutionised the industry: users could finally prove the old adage that a picture paints a thousand words by sending images to their friends instead of text messages. However, it also kick-started a rather more unwelcome trend ? people using their mobile devices to snap rude and unsavoury images. If you happen to be one of these unscrupulous characters then chances are your phone?s SD card is literally bursting with explicit content and therefore some kind of security system is probably called for. After all, you don?t want photos of your nether-regions to be distributed across the net should you happen to misplace your handset. This is where PhotoVault comes in; it allows you to make your images confidential so that they don?t appear in the usual Android gallery application. When you open up PhotoVault for the first time you?re presented with a password creation screen. You?ll need to think up some kind of security code which will have to be inserted every time you want to look at your morally degrading snaps. Once you?re in, the app then reads your phone for available photos. You can transfer these to the private area ? in other words, ?hide? them ? by long-pressing on each image. It?s possible to toggle between the public and private element of the app and organise your photos accordingly. If you?re after such a program then PhotoVault certainly hits the spot; it?s easy to use and has a built-in photo viewer so you can use it instead of the default gallery viewer. The developers have put a lot of time into making this app foolproof. For example, if you hide your photos and then erroneously uninstall PhotoVault, you naturally lose the ability to look at those images. However, reinstalling the app and then selecting the ?Rescue Hidden Images? option allows you to retrieve the previously lost pictures. However, if you intend to use PhotoVault to protect yourself from the prying eyes of friends and relatives then it does have one significant flaw ? the icon which appears in your phone?s applications menu is pretty conspicuous and if your better half is prone to snooping around your handset then they?ll probably become suspicious pretty quickly. Despite this shortcoming PhotoVault remains a quick and easy way of securing the pictorial content of your mobile phone. It may not stand up to intense scrutiny but it will provide a significant barrier to anyone looking to snoop around your personal photos.