Need someone to spend a little time researching open source or inexpensive cellphones and smart phones onto which we can install custom software.
As an example:
(This would have been perfect, but it was discontinued)
Our goal is to find a device so we can avoid having to build a device from scratch.
On the device, we need to be able to install custom software.
We do NOT need 2G/3G/4G or any cellular capability, so it could be an open source tablet (so long as it is small / the size of a cell phone).