If you’re like me, you’ve spent hours staring at "Magic Eye" stereograms like the one above, straining your eyes to see some secret image that never appears.

Now you can add a new source of frustration – listening to unhearable ringtones.

Sony Pictures is offering a high-pitched ringtone that only young consumers can hear to promote The Messengers, a horror film about a teen protoganist who insists she hears voices that her parents cannot hear.  The ultrasonic technology was originally developed in Europe to chase teens away from malls, and has been promoted before as an adult-proof ringtone inaudible to people over 25.

Has your high frequency hearing already changed
forever? Listen for yourself.

Misha