You sign up on a new app, and it texts you a six-digit code to confirm your number. A week later, you log in, and it texts you another code before letting you in. Both look identical. Both arrive on your phone. So why does the first one feel different from the second?
That small difference is actually important, especially in a country where cybercrime losses reached ₹22,845 crore in 2024, a 206% jump from the prior year. Knowing which code does what can help you spot fraud before it costs you money.
What Is a Verification Code?
A verification code is a one-time code that a platform sends you when you create an account or connect a new device for the first time. Its job is simple: to confirm that you actually own the phone number or email address you typed in.
Think of it like a postman dropping a letter at your address. The postman does not check your ID every day. He does it once, at the start, to confirm you live there.
So when you register on any new app, whether that is a banking service, an e-commerce site, or an online platform for sports like lotus365 cricket, you get a verification code to prove that the contact details you provided are genuinely yours. Once confirmed, that step is done. The platform does not ask you to verify your number again and again.
Verification codes are also used when you change your registered mobile number, reset your password, or add a new payment method. Each of those is a new one-time event, so the platform runs the check again.
What Is an Authentication Code?
An authentication code is a code you enter every time you want to access a secured account. It is not checking whether you own a number. It is checking whether you, right now, are the person who owns this account.
If verification is the first handshake, authentication is the daily door pass.
You will see authentication codes most often when a service has two-factor authentication (2FA) switched on. After you type your password, the app sends a code to your phone or generates one through an authenticator app. You enter that code, and only then does the system let you in. For example, during lotus365 login or while accessing your mobile banking app, this second code acts as a second lock on the door.
The reason platforms use this is straightforward. If someone steals your password, they still cannot get in without the second code.
Authentication vs Verification Codes: Side by Side
| Feature | Verification Code | Authentication Code |
|---|---|---|
| When it appears | Once, at account setup or identity change | Every time you log in (if 2FA is on) |
| What it checks | You own this phone/email | You are the account holder right now |
| How often sent | One time per event | Each login session |
| Common delivery | SMS or email | SMS, email, or authenticator app |
| Example | Confirming your number on a new UPI app | Logging in to your net banking account |
Why SMS Codes Are Riskier Than You Think
Most Indians are used to getting codes by SMS. It is familiar, fast, and requires no extra app. But SMS has a weakness: it travels through your telecom network, and that network can be attacked.
Axis Bank introduced an in-app Mobile OTP feature in April 2025 that generates time-based one-time passwords directly within its app, eliminating dependence on telecom networks and reducing the risk of SIM swap fraud and phishing attacks.
This matters because authorities were forced to block more than 9.42 lakh SIM cards in 2024 to curb SIM swap fraud, attacks whose entire purpose is intercepting the OTPs that guard bank accounts. In a SIM swap attack, a fraudster convinces your telecom provider to transfer your number to a new SIM, which the fraudster controls. After that, every OTP sent to your number goes to them, not you.
The safer alternative is an authenticator app such as Google Authenticator or Microsoft Authenticator. These apps generate a six-digit code on your phone every 30 seconds without needing the internet or a mobile network. The code is tied to your device, not your phone number. Even if someone knows your password and has swapped your SIM, they still cannot get this code.
A Hyderabad resident learned this the hard way. In December 2025, the 59-year-old man lost ₹2.49 lakh after receiving a fraudulent OTP for a UPI transaction, part of a growing pattern of OTP-based fraud across the country.
Three Rules That Protect You
Never share a code with anyone. No bank, no telecom company, no customer support agent will ever ask you for an OTP or authentication code over a call. If someone asks, end the call.
Read the message before you type the code. Most banks and payment apps now mention the transaction amount and the merchant name in the same SMS as the OTP. If the details do not match what you are doing, do not enter the code.
Use an authenticator app for accounts that matter. Your email, banking app, UPI app, and any account linked to your Aadhaar or PAN should ideally use an authenticator app rather than SMS for the second factor. The Indian government’s cybercrime reporting portal at cybercrime.gov.in also lists fraud prevention guidelines you can follow.
If you believe you have already been a victim of an OTP scam, call the national cybercrime helpline at 1930 as quickly as possible.
When You See These Codes on Everyday Indian Apps
| App or Service | Verification Code Use | Authentication Code Use |
|---|---|---|
| PhonePe / Google Pay | Registering your mobile number | Logging in with 2FA enabled |
| Net banking | Adding a new beneficiary | Every login session |
| Aadhaar-linked apps | Linking Aadhaar to a service | Accessing the DigiLocker account |
| Email (Gmail, etc.) | Creating a new account | Signing in from a new device |