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?
In the meantime that's not possible for now, we can only use bitcoin through internet or data connection then without it of course bitcoin will be useless at all. Meaning offline is not possible in any form of digital currency.