Grayson is a proposed holographic personal assistant and mobile device that sits on the user's shoulder. It can act as a hands-free way to access contacts, emails, GPS and more without needing to constantly check a mobile device. Grayson is designed to have an customizable humanoid appearance and will develop its own persona over time based on how the user interacts with it. While true 3D holograms don't yet exist, the concept is inspired by technological developments that could make such an assistant possible in the near future.