Among global brand card issuers, Japan-based JCB ranks fifth largest based on annual purchase volume. However, it is the top card issuer in Japan where it also operates a merchant acquiring business. In partnership with Singapore-based Keychain, JCB has developed infrastructure to process micropayments tied to credit cards for transactions that originate from unattended, internet-connected devices. Those internet of things (IoT) transactions, which will be valued at less than $1, could be human-to-machine or machine-to-machine. IoT payment transactions are expected to proliferate once 5G mo...