Lenovo's new 27-inch touch screen table PC, the Horizon, features a "smart hinge" which lets the device stand upright like a traditional PC, but also allows the screen to lay horizontal. When the screen is lying flat, Lenovo Aura automatically activates. This multi-touch interface allows multiple users to access information on the screen.
Its 10 finger multi-touch screen is marketed towards offices and families, allowing multiple users of the device.
Here's a Lenovo rep demoing the 27-inch screen at its launch at CES in Las Vegas.