I got dtv but I read many posts and I got some doubts for the extension.

1) it seems if you want to extend the 180 days at immigration office you must provide the same information and documents you already did to get the dtv and you are not sure it will be approved, but if you just travel out of Thailand and back there is no problem and you get the stamp at the passport check. Does it make any sense?

2) with the new system at passport check you don't need to show your passport to an immigration officer but just pass through the scan machine... How to get the 180 days visa stamp on passport then?

Thanks