About: dealextreme.com has several usb gadgets similar to each other and intended, say, for informing the user about new e-mails. For example: http://www.dealextreme.com/p/usb-universal-e-mail-webmail-im-notifier-gmail-outlook-outlook-express-pop3-27062 Unfortunately, in the set there is only standard software for windows. This program allows you to use these devices in linux and OS X. Install: For appropriate operation you need to install libusb 1.0 library. gcc ./mailLighter.c -o mailLighter -lusb-1.0 # chown root mailLighter # chmod a+s mailLighter Example usage: # mailLighter 1