> I'm a passenger in a car dozens of feet away, and both me and the truck are moving around.
That's the least common use case. They actually work well for their intended use cases, which are (a) a passenger scanning it from a care a few feet away moving at relatively the same speed (such as on the highway), and (b) the code being scanned while waiting at a stop light (maybe dozens of feet away).
That's the least common use case. They actually work well for their intended use cases, which are (a) a passenger scanning it from a care a few feet away moving at relatively the same speed (such as on the highway), and (b) the code being scanned while waiting at a stop light (maybe dozens of feet away).