As technology has exponentially improved over the last decade, we have seen an increased use of touch screen, voice activated and biometric interfaces.
Touch screen has already been previously explored in this topic as has voice/speech language interfaces.
Biometric interfaces are currently being used for identification and security purposes due to the uniqueness of features in every human being. Face recognition is being introduced into newer mobile smart phones, as is finger print identification.
Read this article about moving past the touch screen, and explore where interface design may be heading in the future.