I discovered I have access to this thing on my MacBook. I press CTRL+COMMAND+SPACE to pull the keyboard up. I scroll through all the little graphics but clicking on one doesn't automatically add it to wherever I am typing, like here or on Twitter. I can copy and paste but then I get this:
REGIONAL INDICATOR SYMBOL LETTERS CA
Unicode: U+D83C U+DDE8 U+D83C U+DDE6, UTF-8: F0 9F 87 A8 F0 9F 87 A6
REGIONAL INDICATOR SYMBOL LETTERS CA
Unicode: U+D83C U+DDE8 U+D83C U+DDE6, UTF-8: F0 9F 87 A8 F0 9F 87 A6