Update: Starting on 26 April 2022, most venues no longer require check-ins. Only larger events with more than 500 participants at any one time, and certain nightlife establishments, require the public to check in with their TraceTogether App or Token for VDS checks. For more details, see this press release.
All short-term visitors to Singapore are required to use the TraceTogether (TT) App for the duration of their stay in Singapore. Since February 2021, short-term visitors using the upgraded version (v2.6 and above) of the TT App are able to perform SafeEntry check-in to venues using their TT App.
The government is also planning to make TT tokens available to eligible short-term visitors at the point of entry into Singapore, starting from June 2021. More details will be made available on https://www.ica.gov.sg/enter-transit-depart