They look very similar to ones I’ve installed previously, however it does seem a slightly odd choice for stadium access control for corporate if they are facial recognition.
Reason I think they are, is they appear to have a camera on them and the screens (for facial recognition) look similar to those ones, so you can see your kisser on them and fit it in the wire grid overlay.
Plus it’s all angled up to head height.
QR / Barcode or NFC scanners don’t need all that config, if they just want to record who’s coming through, the regular CCTV can do that job and be cross referenced to a swipe time on the turnstiles for any investigation.
If they are just scanners they seem very over engineered.