Tiny, cheap smart speakers unlocked the rise of digital payments in India
I visited India a few times in the last 9 months after digital payments had taken off due to COVID and can attest that these have been game changers that have led shopkeeps to accept e-payments.More than anything to do with literacy, this basically allows Shopkeeper to keep doing what they are doing without fiddling with their phones etc  to confirm they received money. The device just says the amount received out loud and at that point, the customer can leave with the goods. Haven't seen this tech anywhere else.In my latest trip, I don't believe I paid cash in any shop and I was in a second tier city the whole time, not one of the big metropolitan cities.