I think my savings account and debit card were recently frozen. I don't live in Thailand anymore, so I worry that K-Bank may close my account for good. My point was that an account with a secured amount may be something that K-Bank might open for me, even if I don't live in Thailand. (Obviously, I would also like the secured credit card issued in this scenario.)
I would open such an account with, say, 100,000 baht, which would give me a 'usable' balance of 50,000 baht. My main question is, of course, what visa, or residence status they require to open such an account.