Once again, I bring you these.
Of course there are still queues, but the scanners doesn't care if it's a QR code on a ST, a phone or a ticket. It just scans it.
And you get 8 turnstiles, where there once was 4. With less stewards needed, because they pretty much run themselves.
In the 10+ years I've attended, I haven't seen or heard of entry problems even once. And there are always 15.000+ inside.
One reason may be, that the scanners are not wireless, but all cabled to a main server. Which makes it WAY more stable! Wireless is smart, when it's working. But when you are totally dependent on it, and it goes <ovf censored> up (as I've experienced myself at Vale), it really goes <ovf censored> up!