[scrps]

I kinda figured it would come down to RFID still probably being pricey, used it a while back when it was newish and pricey but haven't looked in years.

That is a good point with the pricing making it cost effective but they probably look at it from some maximum profit POV.

Honestly something like an Automat diner style system would help with the latency and queuing and way easier to implement technically.