Learning with 'e's
MARCH 13, 2017
The boards can identify what colour pen the teacher is holding, and can also sense for example, when someone has walked into the room (whereupon it automatically readies itself for use). However, picking up the red pen and then replacing it in the black pen socket didn't help matters. The colours of the pens on earlier versions were not as important as the place you located them. A pen placed in the black pen socket printed black no matter what colour it was.