President Obama has admitted that he isn’t allowed to have an iPhone, due to security concerns. Instead, the president uses a BlackBerry outfitted with secret encryption devices. President Obama was famously a BlackBerry fanatic when elected in 2008, and had to fight with the Secret Service to keep it. follow link
Sleep (and Lock) Your Screen
When you are walking away from your computer, it's fairly common practice to start your screen saver and lock your screen. But did you know that there is a built-in keyboard shortcut in Mac OS X to sleep the screen?
Press Control-Shift-Eject and your monitor sleeps without engaging the screen saver.
- ExtraBITS for 9 December 2013 (09 Dec 13)
iPhone Not Secure Enough for the President