Is a QR code sufficient to prove vaccination status for entry from the USA to Thailand?

The community suggests that while a QR code may be accepted to prove vaccination status when entering Thailand, it is advisable to have printed copies of all necessary documents. Multiple users shared experiences indicating that having both a digital and physical form of the vaccination certificate is beneficial, as it can prevent delays at the airport. Some users reported successful entry with QR codes displayed on their phones, but emphasized the importance of having printed documents to avoid complications.