Someone has shared something with you.
You'll get a push message on your phone.
Open the message and you'll get to the Sharebox app.
Remember to be at the right location before opening the box!
Choose to open the Sharebox that is shared with you.
You can also just go to the Sharebox app and your reservations will turn up like following:
1 Open the app
2 Find your reservation in the app
Remember to be at the right location before you
3 Press "open" to unlock
4 Pick up the content and close the door
5 Sender is notified