Logitech's K810 keyboard pairs with up to three devices, has a button for switching apps in Windows 8 -- Engadget
As it turns out, the outfit wasn't quite finished unveiling its Win 8 lineup: the company just outed the Illuminated Bluetooth Keyboard K810, which has a hotkey for toggling between open programs. It also features Easy Switch, a technology first introduced on the K760 that allows the device to pair with up to three Bluetooth-enabled devices at once, regardless of the OS. As for the switching bit, each paired device gets assigned to one of three function keys; just press the button to start using the keyboard with that device. In theory, then, you could have the same keyboard hooked up to your PC, tablet and phone, and be able to type on all of them from minute to minute, though that admittedly seems like an unlikely scenario.
https://imgur.com/skBl5
As it turns out, the outfit wasn't quite finished unveiling its Win 8 lineup: the company just outed the Illuminated Bluetooth Keyboard K810, which has a hotkey for toggling between open programs. It also features Easy Switch, a technology first introduced on the K760 that allows the device to pair with up to three Bluetooth-enabled devices at once, regardless of the OS. As for the switching bit, each paired device gets assigned to one of three function keys; just press the button to start using the keyboard with that device. In theory, then, you could have the same keyboard hooked up to your PC, tablet and phone, and be able to type on all of them from minute to minute, though that admittedly seems like an unlikely scenario.
https://imgur.com/skBl5