I once bought one of those Lenovo something hybrids between touchpad and notebook, horrible design as it turned out. It had a docking type of connection with th

I once bought one of those Lenovo something hybrids between touchpad and notebook, horrible design as it turned out. It had a docking type of connection with the keyboard, very sensitive to vibration of the desk. Since the touchpad piece had the CPU, and the keyboard piece had the external connectors, it was practically unusable. If you connected an external storage device, it would randomly disconnect (and possibly lose data) due to vibrations of the table. So yeah.. you could probably tap morse code on the table and have it detected on this device.