Smartphone keyboards -- physical or virtual -- are just too hard to use. All those icky keys to tap … isn't there an easier way? Yes, thanks to Gmail Tap, a Google breakthrough that brings back one of the 19th century's most prized innovations: Morse code. The benefits are substantial: Morse code replaces 26 keys with only 2, allowing you to tap and send messages without having to glance at the screen. Who knows, if Gmail Tap takes off, texting while driving may soon be legal.