Google's Project Ara Module Developers Kit Released
projectara.com
projectara.com
How is Google assigning the UniPro[2] interface license necessary to make these modules?
[1] http://storage.googleapis.com/androiddevelopers/project_ara/... [2] http://en.wikipedia.org/wiki/UniPro
That said, the link you gave seems to say it's not necessary for this application:
> Royalty-free licensing conditions apply within the main target domain of the MIPI Alliance, mobile phones and their peripherals, whereas RAND licensing conditions apply in all other domains.