The Stager app lets you immediately see how many tickets have already been scanned, and when. This way you can monitor queues at the door, or how many visitors have already arrived.
In the app, go to Reports - Scan insights and choose the relevant event. At the top you immediately see how many tickets are scanned from the total: this is also shown in percentages. Below that, you can see in a bar graph how many scans have been completed every 5 minutes. You can also switch to a view monitoring the whole event. Handy if you want to review the peak traffic at the door.
Click at the bottom of the page for 'Scans per ticket type' to see in detail how many tickets have been sold, scanned, or reserved (guest list) for each ticket type.