AC has advised airport employees that the yellow BP's have been discontinued and will disappear as the remaining stock is used. Apparently they were introduced in the kiosks as a heads up to gate agents to double check it for correct info, a coupon, etc.

I guess the error rate has declined to the point where the system is no longer needed (or the error rate is so consistently high across all BP's accepted that they decided to forgo the add'l cost?)