Some people say that the network signal is not good when you are away from home. If there are currencies that are traded offline, that would be great, and maybe there will be large-scale application scenarios for digital currencies! What do you think?
Internet is a must these days. You have been talking about signal which doesn't even make sense this day. Are you going back again to the 2000's?
The currencies can't be traded offline. Crypto needs internet to broadcast its tx hash to be verified by the miners or validator. What you have been taking was impossible to happen.