Apple’s Passbook app and system lets you use passes that contain time-sensitive or location-sensitive information. For example, you might have a pass that triggers when you enter a specific store, like Target. Or, you might have airplane tickets going through Passbook, if you use that specific airline’s iOS app.
The ideal here is that the passes show up on your lock screen, so you don’t have to launch an app. This doesn’t always work, however. What can you do when it doesn’t? I’m glad you asked.