This thesis explores the creation of ambient data visualisation devices that keep users informed via their use of colour and light to convey information. It is an exploration into how the principles of information visualisation can be applied to the design of “calm” devices in order to enhance their features as well as expand their information fidelity. This exploration builds on the concept of “calm technology”, coined by Mark Weiser and John Seely Brown of XEROX PARC (1996) which describes unobtrusive, informative technology. Calm technologies should exist mostly in the periphery, continuously relaying information in a non- intrusive manner. The research employs iterative prototyping and reflection to explore was to improve information delivery within calm technology. The project demonstrates several opportunities to enhance visual-based calm technology devices by incorporating principles of information visualisation in order to expand the information fidelity of these devices.