Passbook???

So this is supposed to be an app compatible with passbook, and they even list it as one... But try to check-in online using the app. When you check in, your ticket is NOT added to passbook and even if you try to scan it through the passbook app, it wont recognize it. Big fail, KLM. BIG, big fail.

Il_picciotto about KLM - Book a flight, v4.7.0