@Michael *******
“It’s not a visa but an entry requirement irrespective of visa status. It is obvious that the key information is for the foreigners to give his or her address in Thailand. In theory, this information is available on a manual TM30 form submitted in paper form soon after arrival. But many tourists and expats do not regularly update their TM30, or have never heard of it, leading to enormous gaps in the immigration data base. The assumption is that the TM30 will disappear and replaced by the online TM6. If foreigners change their address whilst in Thailand, they will presumably be able to update the TM6 on their mobile device.”