Few days ago a friend asked me this questions. But i cannot understanding that how to i give him answer. At last i said him that, bitcoin is an online currency. Only this currency used in online marketplaces. It is not possible to use it in offline marketplace like offline currency.
But what is your best answer of this question?
You cannot use bitcoin without internet connetion it is the number one requirement on how to access bitcoin. Bitcoin can access only using internet if you dont have connection you cannot make any transaction in offline mode.