RearType

From seen to unseen: Designing keyboard-less interfaces for text entry on the constrained screen real estate of Augmented Reality headsets

“…An alternative approach to maximizing the touchscreen free space is to leverage the rear area of mobile devices [15,16,17]. Addendum sensors are installed on the back of mobile device and leave the entire screen for content display.…”

Active PinScreen: Exploring Spatio-Temporal Tactile Feedbackfor Multi-Finger Interaction

“…Back-of-device interaction is one way that these issues have been overcome. RearType [39], for example, explored the ability of the fingers, maximising the use of the front display for visual output and adding split and rotated keyboard layouts on the back of a smartphone. HaptiCase [8] helped users to know the location of their fingers on a rear case by feeling tactile landmarks on the back of the smartphone.…”

Keycube: Text Entry Evaluation with a Cubic Device

“…For instance, comfort, muscular stress and strain injuries were addressed with split and vertically oriented keyboards [24,26] without decreasing much of input speed after a week of use. Split and orientation tricks have been used with the RearType technique [25] by disposing keys on the reverse side of a tablet. Exploiting potential knowledge transfer from the QWERTY layout, users achieved 15 wpm within one hour of training.…”