Icons have become the native language of modern day devices. They are the most efficient way to communicate information in a limited space, and are universally ingrained into the digital and physical worlds. Icons can enrich a user's experience of a product or service, and express character and feeling. But iconography needs to adapt for the future. Retina displays, responsive websites and a multitude of screen sizes pose new challenges and opportunities for both designers and developers. How can we achieve crisp, legible and scalable icons that are perfectly optimised for every device? This talk will focus on current solutions from leading experts in the field, and will reveal what the future might have in store.