You can use your phone as a keyboard on a Windows PC by using Android apps and PC software. Here is a complete guide on this.

As it turns out, it’s relatively easy to use a tablet or a spare laptop as touchpad for a Windows PC. Fire Max 11 running Bluetooth Keyboard & Mouse ...

A receptionist might use a mouse; so might a quick-oil-change cashier, or someone working at an airline gate. In this new computer landscape, mouse life would find a way.