in-person signing when no connection

Hi, Is there some way that the in-person signing can take place if there is no connection available? Some of our sales people have encountered that in some areas they are trying to do a signing the connection is too slow/unstable or not able to connect at all. They would be connecting using the hotspot on their phone. They asked if there was some sort of option that it could be captured while offline and be sent to esign live when a connection is made. Any information on what to do in these situations is appreciated.