The post featured Yui Hirasawa from a beloved anime, captioned with "look between t and o ... the letters on their keyboards. For example, they might say, "Look between H and L on your keyboard ...

The letters between t and o on a keyboard are y, u and i, spelling Yui, which is a character in the anime series about girls who form a band through their high school's music club. X / Twitter ...

Tsubasa Yumura, a computer science researcher in Japan, rigged up a keyboard that looks like it launches letters into the computer when they're pressed. It uses a technique called projection mapping.