... and we are really intrigued about the meaning of the key you can see below inside the red circle:

Anyone knows the meaning of the symbol or at least the keyset it may come from?
I though about Braille, but it does not fit because number and distribution of dots. It also reminded me those binary clocks you can see here and there (is it codifying 3 bits numbers? horizontally? vertically?)
Please, shade some light on this mystery!
