One of the marvels of Human-Computer Interaction (HCI) technology is the mouse. Since a wireless mouse or Bluetooth mouse still need a battery for power and a dongle to connect it to the PC, they are not entirely device-free at this time.In the modern era of invention, a remote mouse or a contact-less mouse still uses gadgets and isn't entirely free of them because they use power from the gadget or, occasionally, from external power sources like batteries and take up more space and
electricity.
