Tactile Presentation to the Back of a Smartphone with Simultaneous Screen Operation
summary
A prototype smartphone-mounted electro-tactile display with 61 electrodes presents mirror-image tactile maps to a single finger on the device back while the other finger operates the screen. Two experiments (640 trials, 8 participants) test line-direction and 4-shape recognition across one- and two-hand grips; users reliably discriminate shapes with no mirror-image confusion and perform faster and more accurately with one-hand operation. The hardware uses USB-connected fingertip-sized array and the method proves viable for finger-level back-of-device haptics.
AI-written summary · about