Originally Posted by StarG
A little correction: it is the order of which passengers check in (via phone, internet, or counter), rather than the order of BP was issued - you can i-check first but BP issued much later upon arrival at airport and still get seq. no. 001.
I'm not sure if there's any real benefit of having this piece of info printed on the boarding pass. I'm sure the check-in sequence can be easily retrieved from the airline's/ground handling agent's database if needed for whatever reasons.
Loony