How to Set Up Two-Factor Authentication Properly on Your Banking App
How to Set Up Two-Factor Authentication Properly on Your Banking App.
Your banking password is important, but it shouldn't be the only thing protecting your money.
Two-factor authentication, commonly called 2FA, adds another verification step when you log in or perform certain sensitive actions. Instead of relying only on your password, your bank may ask for something else you have or something you are—for example, a one-time code, fingerprint or facial verification. The Central Bank of Nigeria recognises two-factor authentication as an important part of secure authentication in financial services.
The good news? Setting it up doesn't have to be complicated.
What Does 2FA Actually Mean?
Think of your banking account as having two locks.
The first could be your password or PIN.
The second could be:
- A one-time password (OTP)
- Your fingerprint
- Face recognition
- A verification prompt
- Another approved authentication method
So even if someone gets your password, they may still need the second verification step to access the account.
How to Turn On 2FA on Your Banking App
The exact buttons are different for every Nigerian bank, so don't expect every banking app to have the same menu.
However, the process generally looks like this:
Step 1: Open your official banking app
Download or open the banking app through your bank's official website or recognised app store.
Avoid clicking banking-app links sent to you through WhatsApp, SMS or social media.
Step 2: Sign in normally
Use your normal banking login details.
If you suspect someone already has access to your account, secure the account first rather than simply adding another security feature.
Step 3: Find your security settings
Look for options such as:
Security
Authentication
Two-factor authentication
Two-step verification
Login security
or Transaction security.
The name will depend on your bank.
Step 4: Choose the strongest option your bank provides
Some banks may use OTPs sent by SMS, while others may combine passwords with biometrics or other authentication methods.
If your bank offers multiple options, choose the one that provides the strongest protection while remaining practical for you.
In general, authenticator apps or security keys can provide stronger protection than SMS-based codes when a service supports them. However, many banking apps determine which authentication methods you can use, so don't install a random authenticator app expecting it to work with your bank.
Step 5: Verify your identity
Your bank may ask you to confirm the change using an OTP, PIN, biometric verification or another security method.
Only enter the code inside your bank's official app or website.
Step 6: Complete the setup
Once your bank confirms that 2FA or its equivalent security feature has been activated, check your security settings again to make sure it is enabled.
How to Know Your 2FA Is Working
Don't assume it's active just because you clicked a button.
Your bank may require the additional verification when:
- You sign in from a new device
- You perform certain transactions
- You change security information
- You add a beneficiary
- You make a higher-risk transaction
The exact triggers depend on your bank.
Some banks may also use additional security checks in the background, so you won't necessarily receive an OTP every time you open your banking app.
The Most Important Rule: Never Share Your OTP
This is where many people get into trouble.
You may receive a message or phone call saying:
“I'm calling from your bank. Please give me the OTP you just received.”
Don't give it to them.
Scammers may already have your username or password and simply need the verification code to complete the login or transaction.
The FTC warns that scammers commonly try to trick people into giving them verification codes.
Your OTP is for you.
Not:
❌ Bank staff calling you
❌ “Customer service”
❌ A friend claiming they accidentally used your number
❌ A buyer sending money
❌ Someone helping you “activate” your account
If someone asks you for a verification code, stop.
Don't Approve a Login You Didn't Start
Some banking systems may send a notification asking you to approve an action.
If you didn't try to log in or perform that transaction, don't approve it.
Someone may be attempting to access your account using credentials they obtained elsewhere.
Don't Turn Off Your Security Features Because They're “Inconvenient”
You might find OTPs or biometric checks annoying when you're trying to make a quick transfer.
But that extra step can be exactly what prevents someone with your password from accessing your account.
The CBN's cybersecurity framework requires financial institutions to maintain appropriate security controls to protect customer information and reduce financial loss.
Protect the Phone That Holds Your Banking App
Your banking security is only as strong as the device you're using.
Make sure you:
✓ Use a screen lock
✓ Keep your phone's operating system updated
✓ Keep your banking app updated
✓ Don't install apps from suspicious sources
✓ Don't allow strangers to control your phone remotely
✓ Don't save sensitive banking information in your notes or screenshots
Keeping your phone and apps updated is also recommended as part of basic account security.
What If Your Phone Is Lost or Stolen?
Act quickly.
Contact your bank through its official customer-service channel and explain that your phone or SIM has been lost or stolen.
You should also contact your mobile network provider if your SIM is involved in receiving authentication codes.
Then secure your important accounts from another trusted device.
What If You Receive an OTP You Didn't Request?
Don't ignore it.
An unexpected OTP could mean someone is attempting to access your account or perform an action that requires verification.
Don't give the code to anyone.
Instead:
- Don't approve the request.
- Don't share the OTP.
- Open your banking app directly.
- Check your account activity.
- Contact your bank through an official channel if you suspect an unauthorised attempt.
- Change your password if you believe your login details may have been exposed.
2FA Doesn't Mean You're Completely Scam-Proof
This is important.
2FA is an additional security layer, not a guarantee that you'll never be scammed.
A scammer may still trick you into authorising a transaction yourself.
For example, someone could call pretending to be your bank and convince you to approve a transaction.
That's why you should always check what you're actually approving before entering an OTP or confirming a transaction.
The CBN has highlighted social engineering and phishing as cybersecurity threats affecting financial services.
Quick 2FA Safety Checklist
Before you finish setting up your banking security, make sure:
✓ Your banking app came from an official source.
✓ Your password is strong and unique.
✓ 2FA or your bank's equivalent authentication feature is enabled.
✓ Your phone has a secure screen lock.
✓ You know never to share an OTP.
✓ You don't approve login requests you didn't initiate.
✓ Your phone and banking app are updated.
✓ You know your bank's official customer-service channel.
The Bottom Line
Two-factor authentication adds an extra layer of protection to your banking account, but setting it up correctly is only half the job.
The other half is knowing how to respond when a scammer tries to get around it.
Never share your OTP. Never approve a transaction you didn't initiate. Never give strangers remote access to your phone.
And remember: