This article is taken from Channel News Asia which is a Singapore News Channel. Hossan Leong is a local entertainer who has been English educated all his life. He comes from an (notorious/infamous) English school in Singapore whereby more than half or three-quarters of the students don't speak proper mandarin (most come from English-speaking families), and if you do speak proper mandarin and do well for your chinese test, you're instantly looked upon as weird/geeky. I use the word entertainer cuz he acts/sings/dance/does comedian etc etc etc. If you ever watched a locally produced musical called Chang and Eng (which has since gone to Oz and HK and Beijing), you would have seen him performing in it...

Hmm... seat 50J, how did you come across the article then?

Sorry for going OT here, but anyway, on the topic...
In PVG, SQ passengers are given stickers to identify them. I think this is largely because of 4 different flights to the city everyday... of which 2 depart within 2 hours of each other.

The last time I was in PVG, my flight was delayed due to typhoon Matsa. There were 4 SQ flights at the airport at the same time. These stickers proved all the more important in identifying the correct passengers and putting them on the right plane.