Mike Lazaridis, president and co-chief executive of Research in Motion and creator of the BlackBerry, tells of his likes and dislikes. What's in your pocket?

My wallet and security card. I also carry a BlackBerry but in North America, we wear them gun-style, on a belt. Mine is a titanium 8320 Curve with Wi-Fi. I use it to run my life and for instant messaging my children when I'm away on trips.