When I travel to work, the time from me rotating my phone screen to present it to the qr reader window on the gate until the time that the gate opens is <1 seco

When I travel to work, the time from me rotating my phone screen to present it to the qr reader window on the gate until the time that the gate opens is <1 second always. I’ve never encountered a delay, it doesn’t seem all that sensitive to what angle you hold your phone at either, it’s only sensitive to distance I’ve found, you need to hold it no more than 2 inches away. Separately we have revenue enforcement patrols with handheld scanners. The time from the red flash of the scanner on my screen (triggered by the person holding the scanner, it’s not constantly scanning) until the beep for ticket result is < 200ms, I.e. it feels very much almost instant but with a little perceptible delay.