Qualcomm announces Wake On Wireless for pocketbook computers and other devices. This could be a security nightmare as a command system for explosive devices and bugging devices. Essentially the system administrator will be able to wake up remote computing devices without a wired connection.
Be prepared to block unwanted WiFi signals to your business campus! Here a wallpaper which might help, but beware building a frequency selective Faraday cage is not always simple. Active WiFi and cell phone blocking is not legal in the UK, unless you are the security services. This is not a new technology QinetiQ dreamt this up a few years ago. There's other research on this, here, here and here.