From talking with the teachers at McBride, the design specs that are the most important are adaptability, usability, and durability since this product will be used by multiple students.
The main stakeholders will be the buyers (teachers and parents of Rett Syndrome students) as well as the users (Rett Syndrome students).
1. Adaptability
This product will need to be adaptable to a number of students without needing modifications which means it should be able to move from one place to another in less than 10 seconds
2. Performance
This product will need to be easy enough for the disabled user to use without any help which means it should be slow enough that students have at least 5 seconds to react to the gameplay
3. Durability
This product will need to withstand force since some students are easily riled up which means it should be able to withstand at least 30-50 pounds of direct force
4. Cost
This product will need to be cost-effective because schools/students don't have a lot of money to make or buy an expensive product which means it should be less than $50
5. Aesthetic
This product should be appealing to the eye so that the user will want to use it which means it should consist of 2-3 colors or different lights