The company claims it's the first 3-D tech that casts three-dimensional objects in mid-air without using any kind of screen. ... 3-D Projection Tech Makes Images Hover in Mid-Air, No Screen Necessary.

TongRo Images Inc./Getty Images If there's one rule that most parents cling to in the confusing, fast-changing world of kids and media, it's this one: No screens before age 2. As of today , that ...