Consumers could soon be interacting with an electronic screen on packaging, thanks to a new development by University of Sheffield scientists.The scientists collaborated with technology company Novalia to create a new way of displaying information on packaging, a move that could revolutionise the packaging industry. This technology could be used in greetings cards or products where a customer could receive a simple message. More complex developments could include a countdown timer on the side of a packet to indicate when a timed product was ready – such as hair-dye, pregnancy tests or home-baking using a ‘traffic lights’ system. In a paper published in the IEEE Journal of Display Technology, the team explains how a screen can be fixed onto packaging to display information. The process involves printing electronic tracks onto paper and then fixing low-cost electronics and a polymer LED display to the paper using an adhesive that conducts electricity.