A $50 (£32) pen called 3Doodler lets you draw three-dimensional shapes using a special plastic 'ink' that hardens almost as soon as it is released from the nib. The pen has a chamber that heats and ...

Photoshop Shapes are vector images that you can size up or down without degrading the image quality. The best thing about using Shapes is that it saves you time. For example, few people can draw a ...