I’ve seen these all over Europe. Some have simple images of the cross flashing, some have windows screensaver esque animations, and some have 3d renders of various things rotating in all sorts of ways. Why is that? Wouldn’t a simple green cross be enough to get the point across, or do they need to be overly verbose? Here’s the full video instead of a gif
They don’t even need to persuade individual pharmacies. In my country, there is a trade organization of pharmacies that self-regulates the industry and decides, among other things, on the short list of companies whose crosses are allowed to be installed. There are only 6 so getting on that list will give anyone a huge number of orders.