Creative Cloud Pen and Digital Ruler. Introducing creative hardware that makes sketching and drawing more natural and fluid. Designed to be used with the iPad, Adobe Ink is a fine-tip, pressure-sensitive pen built using Adonit Pixelpoint technology to give you greater creative control and unprecedented precision. Adobe Slide is a digital ruler that lets you draw any shape on your iPad — including straight lines, perfect circles, classic French curves, and more. Requires iPad (4th generation), iPad Air, iPad Mini or iPad Mini with Retina display.