>Mattel missed something here. The secret cipher could have been a big selling point for their target audience.

While I agree a spy keyboard would appeal to all children, tacking the Barbie brand on it feels strange.

Imagine a box saying "Barbie Keyboard; Now with 4 unique cyphers!" The two have nothing to do with each other, unless there is a Barbie spy line I'm unaware of... searching...

Yep there is a "Barbie Spy Squad" movie released 2016. Of course.