Spy cameras

Spy cameras help you to spy on fellow players in your world and has a video screen which allows you to see what the spy cameras sees. The spy camera requires glass, copper, sticks and a smooth stone slab and the video screen requires sticks and glass. You can only make one spy camera and one video screen at a time. The spy camera would be the size of a button and would match the colour of whatever surface/block it is placed on. The video screen would work like a map, only you would be able to see what the camera is looking at.