Internet banking enables seamless financial transactions for the users without having to visit the bank in person. You just need to have an internet connection to conduct transactions from anywhere in the world. Debit card or ATM card details have been made mandatory to register for an internet banking to ensure a secured transaction. Those who do not have a debit card will have to visit the nearest bank branch to register for the net banking. 

Certain banks have made it mandatory to enter the grid numbers that are available on the debit card before conducting the transaction. This was introduced with the intention of curbing the false transactions. However, this layer of security is not mandated by all the banks as OTP has been an effective method. 

After registering for internet banking, the requirement of a debit card is minimal. For shopping online or paying any bills, you may have to login with your credentials and conduct the transactions. Keep your debit card details safe and do not share it with anyone.