Vibrating Train Windows Transmit Ads Directly Into Your Head

Billboards. Radio ads. Pop-up banners. You see and hear advertising everywhere these days, and a new concept literally bring ads into your skull. Sleepy commuters in Germany, who rest their heads on public train windows, have recently gotten a surprise when they heard an ad that no one else can, as explained in the video above. They're not dreaming: a transmitter on trains in Munich and North Rhine-Westphalia sends high-frequency vibrations to the windowpane, which a person can hear through bone...