Fig. 1: Concept for a dual-sided transparent display.

a A vehicle installed with a dual-sided display could utilize one window to provide two unique augmented scenes. Here an interaction between two people, one English-speaking and one Japanese-speaking, is enhanced using the dual-sided display in the case of a ride-share application. b A depiction of what the English-speaking driver would see from the inside of the vehicle is shown on the interior side of the window. Note that the majority of the screen remains transparent allowing the driver to see the passenger. c A depiction of what the Japanese-speaking passenger would see approaching the vehicle; the Japanese translates to “Sato-san, please enter the boarding code.” Note that although the same window is used, graphics are shown on either side without any impact on each other d–f Most technologies related to the application of a dual-sided display suffer from the following three challenges. d Occlusion implies that graphics on one side of the display block those on the other side; in this case, the desired writing occludes the obverted writing. This overlap of text and or graphics detracts from the utility of the display. e Although an interlayer could be used between two screens, this type of occlusion removes functionality as an augmented reality device. f By using software it is possible to defeat the challenge of occlusion using a single screen by separating out the images, however, the obverted imagery would not be desired by a user.