On Meiji Dori, between Harajuku and Shibuya, I recently came across a tall futuristic titanium-silver contraption staring down at the street with what looked like six portholes. When I got closer, I found it had a window display of small bottles with three signs below saying "touch here!"
Being the tragically curious Alice in Wonderland type, I did.
As soon as my hand passed over a sensor, a cool fragrant mist drifted out from a blower above and descended over my head. Naturally, I touched the other two panels . . . And then the first one again . . . and then the other ones again . . . then the first one yet again — and I was just considering doing it all again, despite how daft I looked with my nose in the air, when it happened . . .