I don’t know how the technical implementation will work, but here is a post I found.
The idea is that you transfer money from the bank to your device, just like withdrawing cash from an ATM. Transferring money from one wallet to another should be able to be offline.
It seems like privacy is a priority, if only to satisfy privacy groups and improve acceptance.
Who knows, maybe OP is playing competive PVP in the browser on his phone?