TPIN is a 4 digit code which is used for approving transactions from BNB mPAY.
If you have forgotten your TPIN, you can reset the TPIN via BNB mPAY app by providing ATM card details and ATM PIN.
If you have forgotten your TPIN and do not have ATM card, please fill up the form [download form] and email it to update@bnb.bt.