When is an authenticated passport required for the LTR visa application in Thailand?

The discussion centers around the necessity of having an authenticated passport while applying for the Long-Term Resident (LTR) visa in Thailand. Initially, the user expressed confusion regarding the requirement for authenticated passports and sought clarity on when it may be needed. Various comments indicate that while some believe it is not necessary for the LTR visa application, there are instances where authenticated copies may be required, particularly to prove authenticity to certain entities. Ultimately, it is suggested that for the LTR visa, one can focus on completing the online application, proving income, and providing insurance or proof of funds without the need for passport authentication.