I’m from a US state where we don’t pump our own gas. Since I don’t pump my own gas regularly - only when I’m out of state - I’m not exactly sure when this happened, but all gas pumps seem to play ads now while the pump runs. At least the states adjacent to mine. Like can I not even pump gas in peace? Stop trying to manipulate my purchasing decisions 24/7.
Almost two decades ago, I worked at a network service provider who had as a customer a company that provided the technology for serving those gas pump ads.
At each gas station they had a VSAT, a router and of course the digital signage boxes on each pump.
They fed the ads to thousands of pumps via a single T1 to HughesNet in Atlanta. They’d multicast the ads, and have a local cache at each pump that would receive the stream, cache it and serve it.
It was one of the most elegant setups I’ve ever seen, and should serve as a case study in multicast for efficient bandwidth utilization across an expensive data transmission medium.