This may be pedantic, but I learned something.

p.s. in the spirit of pedantry:

看板 (kanban) = "signboard"; 板 (ita) = "board"

From a wikipedia glance, "kanban" was used here in the sense of a particular process-control method, and although the term "kanban" here is pretty clearly derived from 看板, I suppose now it could be considered a distinct term.

Still, "kanban board" really sounds redundant...