MPIN stands for Mobile Personal Identification Number and is a 4 or 6-digit passcode used to authenticate transactions and verify identity on mobile banking and payment apps. Learn how to generate, change and use MPIN for various activities such as fund transfers, bill payments and online shopping. MPIN stands for Mobile Personal Identification Number . It’s a 4 or 6-digit passcode used to authenticate mobile banking transactions. This pin is a secure alternative to entering detailed bank information during payments. For example, your MPIN might be a series of numbers like 172362 or 923813. In this blog, we will understand what MPIN means and how to get it, so let’s dive in! MPIN means Mobile Personal Identification Number , which is a 6-digit security code issued by NSDL to verify and authorize Demat account transactions on platforms like SPEED-e and IDeAS. MPIN (Mobile PIN) is a 4 or 6-digit secret number you use for mobile banking. It works like a password to keep your money and transactions safe. You need to enter your MPIN when sending money, checking your balance, or paying bills through apps like BHIM UPI (Unified Payment Interface), Google Pay, Paytm, or your bank’s mobile app.