Zerodha TPIN is a six-digit code; an authentication sent to the trader register mobile number and email address to allow Zerodha brokers to withdraw trader's stocks and securities from their Demat account. Instead of Zerodha Kite Pin, now, it is mandatory to use CDSL TPIN to authorize Zerodha for stock debit from the Demat account before placing an order — delivery or CNC, or GTT on Zerodha Kite platform.