Originally Posted by
moondog
Clear instructions on the machines (with pictures) would be a good start. I travel with a passport through various checkpoints, and sometimes bar code up works while bar code down doesn't, sometimes vv is the case, and some machines can only scan the info page.
Agree with providing more/better/easier to understand instructions.
I mostly go through the HK airport with my passport and haven't had an issue with the bar code facing down (regardless of the orientation).