Where geographically are you basing that on? In another reply 6nf mentions Osko etc. on the New Payments Platform in Australia, which is fully settled in real-time, 24/7, but even before we had that our Bulk Electronic Clearing System (BECS) cleared and settled everything twice daily on business days and Real-Time Gross Settlement (RTGS) has existed for years for high-value domestic payments.

Cross-border payments have usually taken longer, but the point of my comment is that that is very quickly changing (and already has come a long way in just the last few years). So you may be thinking of older technology or places with less advanced banking systems than what a lot of countries have now?

I'm talking about Visa. You walk out right away, and transaction completes in background after a month.

That's rapidly changing. We have instant confirmed P2P bank transfers now in Australia via Osko and other services.

You probably talk about UX than underlying technology. https://nppa.com.au/fraud-and-security/ they say they have fraud control similar to that of banks.

>If you suspect you have been tricked into paying someone you should contact your financial institution immediately and report it to the police.

If you pay erroneously, what happens next?

If you overpay, you'll need to contact your friend or whoever and ask them to send it back.

If someone tricks you into sending them money, that's just fraud same as credit card fraud or wire transfer fraud or crypto scamming fraud. What are you getting at?

This is exactly as safe as the previous system which took up to 48 hours to transfer the money.