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Singpass 2FA

Multi-user SMS 2FA

1.	What is Multi-User SMS 2FA? We recognise that there might be a group of users without personal mobile smartphones and/or computers. These users may rely on a trusted family member or caregiver to help transact digitally with the Government. As such, this feature was created to allow users to link their account to another persons mobile number for the sole purpose of the latter receiving SMS One-Time Passwords (OTP) on behalf of the former. The primary user of the mobile number will receive the secondary users SMS-OTP as a Two-Factor Authentication (2FA) when the secondary user is making transactions that involve more sensitive data. Primary users will not be able to see what the secondary user is transacting on nor receive any government-linked mailers or notifications on behalf of the secondary user.
2.	What type of services can I expect with Multi-User SMS 2FA? This feature is offered as an alternative Two-Factor Authentication for citizens to transact using their Singpass account. It provides access to any government digital services and services of industry partners which require Singpass login.
3.	How can I sign up for the service? Both primary and secondary users of the mobile number are required to be present with their NRIC/FIN to activate this option at any of the Singpass counters islandwide. For counter locations, please visit go.gov.sg/singpass-counters. Primary users can link their mobile number with up to 5 secondary users, while each secondary user may be linked to only 1 primary user.
4.	What if I or the secondary user is unable to be physically present at the counter to activate this? If you have difficulties being physically present, please contact Singpass Helpdesk at email support@singpass.gov.sg or +65 6643 0555.
5.	Can the secondary user be linked to more than one primary users mobile number? No. As a security feature, the secondary users account can only be linked to one mobile user at any one time.
6.	Is it compulsory for me to use Multi-User SMS 2FA? Can I continue to use existing methods? It is not compulsory. We encourage users to first explore other existing 2FA methods such as Singpass app, SMS One-Time Password (SMS-OTP), or Face Verification. However, we also recognise that some users might find Multi-User SMS 2FA to be a more convenient option.
7.	Is Multi-User SMS 2FA only for family members to use? No. This alternative 2FA method seeks to support older, or less tech-savvy Singpass users who require assistance transacting with the Government. They may be assisted by a trusted caregiver who may or may not be a family member.
8.	What if I change my mobile phone number or have chosen to leave the country, terminating my local mobile number? Primary users of the mobile number need to proactively update this information with Singpass. Otherwise, the SMS-OTP will continue to be sent to the old number.
9.	If I am a secondary user, how can I change my primary mobile number to someone else? You may visit any of the Singpass counters islandwide with the new primary user for this. Visit go.gov.sg/singpass-counters to locate a counter near you. Once the process is completed, the system will automatically override the mobile number with the new one.
10.	Is this service available when either or both users are based overseas? This service is available as long as the mobile number that is used is locally-registered (i.e. starts with +65). However, the activation of this service requires both parties to be present at a Singpass counter. Visit go.gov.sg/singpass-counters to locate a counter near you.
11.	Once the linking is implemented does this mean the primary user gets to see all the info that the secondary user does? The only information that primary users of the mobile number will be able to see is the SMS-OTP. This means that the primary user will not be privy to the type of service that the secondary user is accessing. Secondary users will still receive direct communications from the Government via mailers.
12.	How can I terminate the service? Either party may visit any of the Singpass counters islandwide to terminate this service. Visit go.gov.sg/singpass-counters to locate a counter near you.

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