When I'm working with customers all of them have differing views on the potential risk that certain features and functions of mobile devices may pose. The challenge is that most manufacturers of Smart devices such as Smartphones and Pocket PC's want to include functionality such as Bluetooth, Cameras, Infra Red and other items.
Many customers such as those in Government, Intellectual Property intensive and other organisations see these features as huge risks. The problem is that almost every device now has them by default as the large majority of people do want the features.
Interestingly HP have just released two versions of their 65xx device to cater for the differing needs of the Enterprise Market - one with and one without a camera.
I've seen other different approaches to disabling these features such as scratching out the Infra-Red port, putting superglue in the USB ports but what would be more suitable is a management platform that provides these features.
One of our Partners Credant has a solution called Mobile Guardian which provides the ability to control cameras, disable bluetooth and infra-red as well as provide encryption and policy management. This is a really secure/controlled way of ensuring that the features you don't want people to have access to are disabled whilst still retaining the flexibility the device platform offers.
Read more about Credant's solution at: http://www.credant.com/products/cmgEE.php