i saw 2 guys tapping 3 cards at the same time when i'm in bus 52. my 1st thought was that they're from some tour agency so will have tourists in the bus. but i noticed that they tap their cards at every bus stop. i saw 1 of the guy's neck hung some identity card which states that they work for Land Transport Authority. but the thing is that both guys are wearing school uniform from some sort of secondary school... I"M BORED... >_<