Unity multy keyboard input

Hello,
I’m trying to make a 2d game and I need 2 keyboards.
I need to know how to make unity to distinguish which key pressed in which keyboard.
Please help me I need help, its part of a project I need to do.

thanks (I know that my English isn’t perfect)

Please help?

https://nanlee.wordpress.com/2013/06/12/manykeyboard-using-java-hid-api-to-handle-multiple-keyboard-input/

i found a link concerning this issue, but its for java. (not c# or java script)
but can be a helpful read.

i too have a similar problem with my current project.
please post the solution if you get any.