Went to check out Timbre+ since nothing to do whole week.
They have a tray return deposit refund machine there. Stall holders' cash register automatic charge a dollar to the food you ordered and you pay for it. Then when you return the tray at the tray return machine, the machine will automatic detect and refund you a dollar in coin.
Quite a good idea........until I saw customers brought their food to their table, unload the food from the tray and return the tray first. After eating, the bowls and utensils all still at the table!!!
I realize the machine cannot detect bowls and other stuff. It only detect trays!,
Good idea, but stewpig implementation. Did not considered the way human behavior and do things! Ended up, still need cleaners to clear used bowls and utensils on table!
Oh, by the way, if you go during lunch time when sun is shining bright, you be drenched in your sweat after your meal inside the oven-place.