It will all be digital files. It was originally my intention to produce and distribute kits for the keypad but this actually worked out worse for my end customers for two main reasons:
1) Cost: To produce kits, I would have to import a lot of components, assemble them, add a price markup and then ship them again. Furthermore, a lot of my target market are in other countries so they would have to pay higher shipping and import duties. I don't think that is fair - I want it to be affordable!
2) Flexibility: A lot of people I spoke to wanted to adapt the software or hardware to a project of their own - assistive technology, home automation etc. So, by making it Open Source, this will be perfectly possible. It also means that you can choose a design which fits your price range or adapt it to use components you already have so you don't need to buy them again.