There are stores that doesn’t allow cash any more. That is border illegal, as cash is legal instrument for trading. You can’t even open bank account without having mobile phone. Why all those restrictions? So to open bank account you already need to borrow money just to satisfy requirements. But it is your money that you are giving to bank. And what if I don’t want to have phone. Something is off and I think cash needs protection. We will know once we lose it, so why wait, let’s see if it makes difference.