We have talked about the iTwin USB drive before. When this thing first surfaced, it was for PCs only. The iTwin is now compatible with Mac computers as well and allows the sharing of files between both Mac OS X and Windows machines.
When connected together, it sets up a a 256-bit AES encrypted connection between the two halves of the iTwin, providing secure data transfer between devices. Once the connection is set up, the other half of the iTwin can be carried with you and plugged into any computer for a secure cloud-style connection for sharing files.
iTwin also provides a remote disconnect code so if the dongle is lost or stolen you can kill the connectivity between the devices. Another cool part about the device is that it will give you access on the road to any amount of storage that is connected to your computer. It’s like your own personal cloud system. For more info on the iTwin head over to their website.