Per event, you can set an offline scanning leeway under Manage/Advanced.
Our default is 10 minutes. For this example, we will also use the leeway of 10 minutes.
What does the leeway do?
Normally, attendees need an internet connection to open a valid ticket and enter the event. The leeway makes sure that a customer can open their tickets in the app without an internet connection at the door, for a specific amount of time.
How does the leeway work?
20:00 (8PM) - I open my ticket with an internet connection. My ticket gets the following timestamps* that the GET In App can detect:
- A timestamp that shows I’m opening the ticket live
- A timestamp that shows when I had the last internet connection:
*These aren’t visible, but we made it visible for this example:
When I open the ticket again on 20.08 without an internet connection, my timestamps look like this:
Because the time between 'Live' and 'Internet' is less than the leeway (10 minutes) the GET Scanner will scan this ticket as valid.
If I open my ticket at 20:14, my timestamps look like this:
Because the time between Internet and Live is more than the leeway (10 minutes) the GET Scanner will scan this ticket as not valid.
How safe is it?
As you can see in the example, the QR codes will still rotate. Because of that the live time stamp changes all the time when opening the ticket.
Increasing the leeway will not increase the probability of having false tickets. Every ticket online or offline can only be scanned once.
If people notice they can enter with an offline ticket, this could be exploited by a scalper to so sell (and scam) uninformed buyers. Resulting in more disappointing guests at the entrance.