I am still finding the entire process of getting the Thai visa from Mumbai a bit strange especially when they have visa on arrival for Indians. I mean even if they insist on you carrying in currency as proof of funds who is to say its actually YOUR currency. For all they know, one could have borrowed it from someone. I mean the entire thing doesn't make any sense to me. And why would they need the photocopies of the notes anyway. Would the immigration in Thailand check the serial nos of the currency notes that you're carrying with the ones on the photocopy???? I think they intended for everyone to carry TCs while traveling but were taken aback by all the loose forex floating around in India and hence had to apply the same rules to people bringing in forex as proof of funds.