I like the idea of having a 5x5 keypad and a 5x5 LED light box.
you put the card on top, when you press a key, the light illuminates the square.
I cannot figure how the lasers would actually input. if you move your hand over the board, the shadow would be huge.
if that is the display, then how does crossing lasers work ?
the instructions are very confusing.
one little bit of knowledge I have learned over the years is to re-read the question and make sure you understand every possible step. if you cannot understand the question, you cannot complete the task.