Encrypted Pen Drives - Block All But
I've been reading the threads about the various methods of encrypting pen drives, as we're currently having a big push to make sure everything is watertight. We're probably going to be using TrueCrypt in traveller mode / install it on staff machines within school.
My question is - how do I stop staff just buying their own pen drive and using that, as a way to avoid the faff of mounting volume's etc. Is there a way anybody knows of to block all but certain pen drives (i.e. encrypted ones)? Otherwise the whole process seems a little pointless as it can be bypassed too easily.