QR code Attendance plugin for music festival

Hey people,

we are doing a music festival for three days and of course need a ticketing-system.
The event is running from friday-saturday, then closing for a couple of hours and then again from Saturday-Sunday non-stop.
There will be tickets for the whole weekend for 25€ and also day-passes for 10€.
so here is the deal:
if someone buys a day-pass on Saturday and just wont leave, we will not be able to track that. For that, we need a plugin that can not just do the check-in, but also a check-out when somebody leaves. This way we can track if somebody has been on the festival longer than what they paid for and charge them for that.
Any idea how to realize that?

• This topic was modified 1 year, 11 months ago by Jan Dembowski.