> Is the amount of power needed for the laser lower than the amount of power a USB-keyboard, or a Bluetooth connected keyboard needs? I think the point is that

> Is the amount of power needed for the laser lower than the amount of power a USB-keyboard, or a Bluetooth connected keyboard needs? I think the point is that the keyboard itself needs 0 power, so it doesn't ever need to be tethered, recharged, have batteries replaced, etc.