Preparing ground in a designed device

[Prometheus]

Hi everyone. 

I am supporting a team creating a concept for a tactile matrix touch pad meant for blind people. 

Could you please offer some guidance? What we need at the present stage is to get a rough idea of the programming opportunities and challenges. Thus, I would greatly appreciate comments pointing us in the right direction with regards to the following:

- the choice of the programming language - Python vs any alternatives worth taking into consideration
- the path to making the chosen language implementable in a newly designed device - at which stage of the controller design is it supposed to take place
- challenges, risks and ways of making the device script open source - how to maintain just the right level of control

Thanks a lot for help. 

Tom