Remotely wiping mobile phones

Actually force a PIN on the phone (so you have to type a 4 digit password into the phone when you wake it up) is another option. The company I work with forces this on phones that uses it's exchange servers. This idea is that you can't just pick up somebody's phone and start reading confidential email.

Have a look at this page for some information;

http://www.apple.com/support/iphone/enterprise/

The "Security Overview" at the bottom of the page has a quick summary of some things you can do via policy on the exchange server.

http://images.apple.com/iphone/business/docs/iPhone_Secur...