CORRECT and I shall probably get around to trying this method. However:
1 I might not want a video chat if I am in a restaurant at the time. If he is at work, with friends or family, perhaps he does not want a video chat.
2 Telling him "you need to look exactly like your photo" works most of the time. I don't recall getting any that look nothing like the photo. This also prepares the ground for the next step:
3 Sending him packing with nothing if he looks nothing like the photo also works. This provides a nice feedback loop so he can learn deception doesn't work. Unlike the suckers who reward him for such fraud.
The difficult area is where he looks quite like his photo, but I missed something like a beer gut, for example. Obviously I cannot send him away with nothing in such circumstances. I usually go ahead with the date.
After visiting Pattaya for a few years, it also becomes easy to spot the ones who have been using the same photo for 5 years. Some in this category even have two or more profiles.