Fubon Mobile Security Key Service FAQ

Fubon Mobile Security Key Service FAQ

Q1. What is Fubon Mobile Security Key Service (“Mobile Security Key”)?

Mobile Security Key is a two-factor authentication service using Touch ID/Face ID (iOS) or Fingerprint/Facial Recognition (Android) and Mobile Security Key PIN. It is designed to work as part of the Fubon Mobile Banking App to authenticate the Fubon Mobile Banking Service (“Mobile Banking”) logon and designated online high-risk transactions*.

Q2. Who is eligible to activate for Mobile Security Key?

Only individual customers who had registered for the Mobile Banking Service and are using a compatible mobile device are eligible to activate Mobile Security Key. You may click here for details of Mobile Banking Service

Q3. Which are the mobile devices that support Mobile Security Key?

In order for the customers to use the Mobile Security Key services smoothly, the Bank recommends you use mobile devices with the below operating system installed:
  • iOS 11.0 or above
  • Android 8.0 or above


The list of compatible mobile devices includes (but is not limited to):
  • Apple iPhone 5s or later models
  • Android mobile devices with fingerprint sensor enabled. By way of examples:
    Samsung: Galaxy C5, Galaxy C5 Pro, Galaxy C7, Galaxy C7 Pro, Galaxy C9 Pro, Galaxy S6, Galaxy S6 edge, Galaxy S6 edge+ ,Galaxy S7, Galaxy S7 edge, Galaxy S7 Active, Galaxy S8, Galaxy S8+, Galaxy S9, Galaxy S9+, Galaxy S10e, Galaxy S10+, Galaxy S10 5G, Galaxy S20, Galaxy S21, Galaxy A9, Galaxy Note 5, Galaxy Note 7, Galaxy Note 8, Galaxy Note9, Galaxy Note 10+, Galaxy Note 20, Galaxy Note 20 Ultra
    LG: V10, V20, V30, V30+, V40 ThinQ, V50 ThinQ, V50s ThinQ, V60 ThinQ, G4, G5, G6, G7 ThinQ, G7 Fit, G8 ThinQ, G8s ThinQ
    HUAWEI: Nexus 6p, Mate S, Mate 8, Mate 9, Mate 9 Pro, Mate 10, Mate 10 Pro, Mate 20, Mate 20 Pro, Mate 20 RS, Mate 30, Mate 30 Pro, Mate 40, Mate 40 Pro, P8 Lite, P8, P8 Max, P9 Lite, P9, P9 Plus, P10 Lite, P10, P10 Plus, P20 Lite, P20, P20 Pro, P30, P30 Lite, P30 Pro, P40, P40 Pro


Please note that the Bank may (but is not obliged to) update the above list of recommended operating systems and compatible mobile devices from time to time.

Q4. Do I need network connection on my mobile device to use the Mobile Security Key?

Network connection is required when you are using the Mobile Security Key.

Q5. What should I do if I forgot the Mobile Security Key Activation Code provided by Customer Service Officer?

You may call our Customer Service Hotline at 2806 5090 to request for another Activation Code after 10 minutes.

Q6. Can I activate Mobile Security Key at any time?

You can only activate your Mobile Security Key on Fubon Mobile Banking Service platform from 9 a.m. to 11 p.m..

Q7. Can I activate the Mobile Security Key on more than one mobile devices?

To protect your interest, you can only activate Mobile Security Key on one mobile device at a time. If you want to change the mobile device, you are required to deactivate the Mobile Security Key in your old device first, and then re-activate in the new device.

Note: If you would like to logon Mobile Banking with mobile device without the activated Mobile Security Key, you will need to use your User ID and Mobile Banking PIN.

Q8. If I would like to change my registered mobile device, how can I activate Mobile Security Key in the new device?

If you can still access to your old device, please deactivate the Mobile Security Key in your old device first, and then re-activate in the new device.
If you can no longer access to your old device, please call our 24-hour Service Hotline 2104 3362 to deactivate the service, and then re-activate in the new device.

Q9. Can I deactivate my Mobile Security Key at any time?

Yes. You can deactivate your Mobile Security Key on Mobile Banking any time.

Q10. Can I use other methods to logon to Mobile Banking after activated my Mobile Security Key?

Yes. You can still choose to logon to the Mobile Banking using your User ID and Mobile Banking PIN.

Q11. Why I cannot perform designated online high-risk transactions* on Mobile Banking even Mobile Security Key is activated?

Designated online high-risk transactions* are only available while logon to the Mobile Banking using Touch ID/Face ID (iOS) or Fingerprint/Facial Recognition (Android).

Q12. Can I activate the Mobile Security Key on a jailbroken/rooted device?

If your mobile device is jailbroken/rooted, there may be security loopholes. To better protect your interest, you will not be allowed to activate Mobile Security Key on that device.

Q13. Can I change my Security Key PIN?

You can deactivate the Mobile Security Key first and activate the service again using the new Security Key PIN.

Q14. How do I authenticate high-risk transaction on e-banking using the Mobile Security Key?

You can click on the “Mobile Security Key” icon on the homepage of Fubon Mobile Banking App with your activated mobile device to start the authentication. For details, please visit “Mobile Security Key Service – Starter Kit” on the Bank’s website.

Q15. What should I do if my mobile device with activated Mobile Security Key is lost or stolen?

You should report to the Bank immediately that your device is lost or stolen by calling our 24-hours Service Hotline 2104 3362 to terminate your Mobile Security Key at once.

Q16. What should I do if I forgot the Mobile Security Key PIN?

You can deactivate the Mobile Security Key on your mobile device first and reset your Mobile Security Key PIN by activating the Mobile Security Key again.

Q17. Why my Mobile Security Key is deactivated?

For security reasons, the Mobile Security Key may be deactivated when:
  • the biometric data on your device is changed (e.g. add or delete fingerprints or reset facial recognition);
  • you have activated Mobile Security Key on other devices;
  • your Fubon e-banking / Mobile Banking Services have been terminated;
  • you have inputted an incorrect PIN for 5 consecutive times;
  • there are 5 consecutive failed facial recognition match attempts;


If your Mobile Security Key is deactivated, an e-mail/SMS notification will be sent to your registered e-mail address/mobile phone number from the Bank. You will need to re-activate for the Mobile Security Key if you wish to continue using the service.

Q18. Is fingerprint/face recognition authentication safe?

Fingerprint/face recognition can provide a high level of security and protection for identify verification. Only fingerprint(s) / face recognition stored on your device can be used to logon to Mobile Banking. However, you are reminded that when using facial recognition, there is probability of false match due to certain circumstances, e.g. twins or siblings that look alike or “Require Attention for Face Recognition” function in your device settings is disabled. Please read the Terms and Conditions carefully and accept the associated risks and consequences before you activate facial recognition.
Your fingerprints / face recognition data will not be stored in the Fubon Bank Mobile App or kept anywhere within the Bank.

Q19. Can someone else logon my Mobile Banking if their fingerprint/face recognition is stored on my mobile device?

Yes. Any fingerprint(s)/ face recognition(s) stored on your mobile device, now or in the future, can be used to logon to Mobile Banking Service when you have activated your Mobile Security Key. Therefore, the Bank strongly recommend you to only store your own fingerprint/face recognition on your mobile device and should not store or allow any third-party fingerprint(s)/face recognition to be stored on your mobile device.
*For details of designated online high-risk transactions, please visit “One Time Password Service” on the Bank’s website.
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