I've seen some of these bodega/local grocer owners. I think the biggest challenge would be to even get these people computers/reliable internet , and convince them of the added value. I think the technical aspect is probable the easier of the two problems.
Agree 100%. That is indeed the challenge. Towards the bottom I mention that the best way to pitch it might be as a full package POS that can save them money... But maybe its just something for the next generation of local grocery owners to think about
