At an event, from the moment the attendee walks in, the event check-in app collects attendee details through tools like simple check-ins, check-in kiosks, tablets, event apps, turnstiles, barcode or QR code scanning, and facial recognition or NFC tags. Check-in through QR code scanning is the fastest. Once the attendee checks in, the badges are printed instantly through the badge printing machine. This reduces the burden of pre-printing badges and long queues.