This might not help you OP, but alternative to VISA and Mastercard is UPI. India and some south east asian countries use that for transactions rapidly. Also India also built Rupay (not the currency) to break visa and mastercards duopoly.
This might not help you OP, but alternative to VISA and Mastercard is UPI. India and some south east asian countries use that for transactions rapidly. Also India also built Rupay (not the currency) to break visa and mastercards duopoly.