What are the benefits of using a second passport when applying for a visa to Thailand?

Using a second passport, especially if it is from a different country, may offer some advantages in terms of applying for a visa at an embassy. However, all passports are generally linked by immigration authorities, meaning previous visa histories will be accessible when entering Thailand. At the consulate, officials will only see the passport presented for processing, but immigration officials will be aware of all previous entries and exits associated with both passports. Therefore, while a second passport may provide certain opportunities, it should not be seen as a means to circumvent immigration regulations.