How is Thailand verifying the vaccination status of arriving tourists?

Thailand immigration verifies the vaccination status of arriving tourists primarily through the submission of a vaccination certificate. Different countries employ various verification methods; for instance, Singapore uses blockchain technology for electronic vaccination certificates. Travelers may also need to upload their vaccination proof when applying for a Certificate of Entry (COE). While some users reported that their vaccination cards were not directly checked upon arrival in Bangkok, there are notable distinctions between entry requirements for different regions, such as Bangkok versus the Phuket Sandbox, the latter requiring vaccination documentation.