There may be other alternative ways t transfer bitcoin from one wallet to another but we cannot think that those ways will always effective and usable like online transactions because one of the very reason why bitcoin was developed in the first place as a digital currency is to provide best features and effectiveness to its users during online transactions but when we consider about offline transactions for many years fiat currencies has build a reputation among everyone so if bitcoin is completely or partially changed to accommodate offline transactions I doubt it can do a considerable change because it is difficult to compete with major fiat currencies