alt Hacker NewsI’m fairly certain that’s a POS issue, not the payment network.
I’ve heard anecdotally that it’s < 140 ms for payment networks.
Anyone, please correct me if you know better.
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felipellrocha • today at 4:44 AM
140ms is still a ton of time to do a simple transaction
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It's definitely not 140ms round-trip. Issuer processors typically have a ~2.5s window for approval.
In practice, the POS sends a message to the acquirer processor -> hits the network -> is sent to the issuer processor, and back again.
https://medium.com/wharton-fintech/the-anatomy-of-the-swipe-...