Well I think
BIPS could work with you.
Can you define demo account in greater details? ( other than just creating an account for each of the businesses, and showing them their
Mobile Checkout for instance )
Yep, that mobile checkout is basically what I'm looking for, great!
I do have some more questions, see PM.
edit: what I mean with demo account is something I can show for the business owner, where I basically bring the hardware and show a sample buy.
I know two places where they are really annoyed by high commisions of VISA/Mastercard, so I figured those places can be a good start.