We are just about to launch a new service for high secure remote access for schools and other establishments.  The system comprises of a server c/w hardware encryption chips and all the SME server trimmings and a USB drive called a SPOK! (Secure Portable Office Key)

Inserting the SPOK into an Internet connected computer will automatically fire a secure connection to your office server.  The SPOK can be built to run a number of portable applications such as an email client or web browser.

• Secure authentication SPOK comes with Portable Applications allowing programs to be run directly from the key.
• Access data on your GEM office server using a variety of programs. Work from home or from other locations whilst you are out of the office.
• USE SPOK TO WORK FROM HOME SAVING TIME AND TRAVELLING COSTS AND OF COURSE POLLUTION.

You can read more here.