I have received a USB "Web Key" in the mail from a trusted source. It is just a bit of plastic attached to a cardboard insert from which it can be torn off. In reading about such items (used mainly for marketing) I understand that it has an embedded chip and an eeprom that contains the URL of the vendor. All this in a half inch by half inch, almost paper thin device. Inserting it into the USB port opens Safari on my Mac and redirects to the vendor's web site. In reading up on how these things work I believe it sends keyboard commands (or at least character codes) that open the browser. My question is how can this be? I re-booted to make sure no applications were running, no browsers for sure, and yet it still did it's magic. What kind of keyboard characters or external device generated codes can interrupt the OS, then find and open an application without a bit of dialog between me and the OS? Yes, I know on Windows machines there is an auto-run feature that can be user programmed to do similar things but I don't believe Apple left open such a wide door to security issues with Mac OS. (I'm running Snow Leopard).