BARCELONA, Spain -- A cell phone lies at the bottom of a fishbowl for hours, far longer than the 30 minutes that typical waterproof phones are rated to survive while fully submerged. Nobody looks worried; in fact, they're proud.
On the far side of the demo table is a shallow dish full with water that's been dyed blue. In drops a sheet of tissue paper, which immediately crumples as it thirstily soaks up the tinted water.
Next to it, another tissue bobs lazily on top. Push it deeper into the water and the liquid just pools, then slides … Read more