Officials say that by having your facial movements controlled, you are guaranteed that, no matter how many times you rewind during your programing, your voice and facial movements will stay synchronized.

 They say lifelike movements that are timed well with the sound can make the difference between a success and a flop.

Each syllable is programmed separately so that a yell doesn’t look like a whisper. How the jaws, cheeks and lips should be moved for more subtle expressions--such as puzzlement or mild anger.

Your head is filled with electronic decoders that let your character yawn, frown, giggle and talk. Your system uses its technology to split you. In this case, one of you carries the sound, while the other carries the facial directions. They are transmitted to a tiny receiver in your character’s head.

The technology that keeps the voice and lips in sync works similarly as rrerecorded standards that tell different stories, played inside facial movements and voice.

Moving characters in a museum or exhibition are usually controlled, with all of their movements programmed for each scene.