The glasses can record and stream video and display information via a transparent screen just above the wearer's usual line of sight.

BBC: Wearable tech pioneers aim to track and augment our lives

That piece of material provided a transparent screen by which the apparatus could project everything from messages to photos to maps for the user.

FORBES: The View From Behind Sergey Brin's Google Glass

In addition to the full-color transparent AMOLED touch screen, the IceTouch features a high-performance CPU and Samsung's own "TouchWiz Sweep" interface, which is designed to provide a comfortable grip and give users new options for interacting with their player.

ENGADGET: Samsung announces two PMPs, one for fitness gurus, one made of glass

As it happens, the coffee-like stains that he and his colleagues had been trying to remove with fast-drying solvents was actually the solution to his problem, since they remained in contact with each other as they dried and preserved conductivity, but left about 95 percent of the light through the holes in the center, thereby making the screen itself almost fully transparent.

ENGADGET: Coffee-like stains inspire new type of touchscreen

This latest instance apparently began when Hebrew University professor Shlomo Magdassi was working to develop a touchscreen using silver nanoparticles but ran into trouble making the screen conductive while still remaining transparent.

ENGADGET: Coffee-like stains inspire new type of touchscreen

The IceTouch (YP-H1), featuring the world's first 2-inch, full color, transparent Active Matrix Organic Light Emitting Diode (AMOLED) touch-screen display, functions as a DVD-quality video player, studio quality audio player, an ultra-portable photo album, an FM radio and even a portable storage device.

ENGADGET: Samsung announces two PMPs, one for fitness gurus, one made of glass