This is incorrect on all levels. Electronic payments between bank accounts have existed for decades. Banks in many countries now support instant payments using email/phone numbers. There are QR based payment methods which do the same thing. There has even been a special jacket invented to accept contactless:
https://www.tsip.co.uk/blog/2019/2/19/introducing-helping-he...
> Imagine trade in place without data connection.
What, like an airplane? Where many airlines no longer even accept cash on the plane?