Metro should direct card to fare gate payment via phone NFC
It's so painful to stand in a line, recharge that stupid card and then take the card out to every time you entry or exit the metro (and sweat every time searching it in your bag or pockets as it is so easy to loose)
You can't even put that stupid in the purse and use it becoz other debit/credit cards get in the way and the gates can't read it
It would be much better direct to use phone upi tap and go or they let google pay use the virtual NCMC
All other "non tech hub" metro cities in India have it while we are lagging behind