[nayefc]

I'm not sure where you got this from. But Visa already supports P2P payments for its acquirers: https://developer.visa.com/vpp/.

Venmo uses it. Square probably does it as well. Mastercard has an equivalent.

[jonbwhite]

Transactions via Square Cash show up as "transaction adjustments" in my bank account. It is possible that Square is using VPP and that is simply how Visa distributes the payments, but it seemed to be different to me.