Sharded welcome board / Infrastructure

To design a placard is helpful for locating your group promptly.If you need to pick someone up at the airport, but you
don't seem to know each other very well, and you're afraid you won't recognize them. At this time you can make a "pick
-up card", but many people can not write, and inconvenient to carry, one-time use will also cause waste, based on
which we designed this shared pick-up card.