"Nice idea to be honest like there is no competition in the market yet for this but the challenges or concerns that I can see here here are
First - The operational cost of set up and all which I can guess is very high regarding your mode.
Second -…"

"Nice idea but the main problem is implementation as some stores have that kind of machine but the maintainance and operation is the problem so you have to lokke into that"

"Nice idea,
But the competitors are sometimes users only (because people used to ask others only for spot) need to address that as well"