Update: Vaccination-Differentiated Safe Management Measures (VDS) have been fully lifted from 10 October 2022. Visitors no longer need to show their vaccination status or check in when entering venues.
All public-facing venues that are mandated to implement SafeEntry (as reflected on SafeEntry.gov.sg/deployment) have to implement Token check-in modes to allow their visitors to use their TT Tokens to check in SafeEntry. Non-public-facing venues, such as workplaces, do not need to implement Token check-in mode if their employees use TT App for check in.