Here is a portable gadget that turns your TV into an interactive whiteboard. It lets you draw on your screen without having to upgrading your existing system. You can also invite others to see your work and contribute. Thanks to this tool, you can use a stylus to write over PDF files, presentations, videos, and web pages.
GoTouch weighs only 63g. It has a sensor to track the infrared light from the GoTouch pen and transmits the input to your PC or smartphone via Bluetooth. iOS and Android devices are supported. Expected to ship in February.