Players chasing down a rare Snorlax or trying to pin a Pikachu to their pavement in Pokémon Go may have been doing more than just "catching them all" - they’ve also been unknowingly helping train real life delivery robots.
Since the augmented reality game exploded into popularity in 2016, Pokémon Go has built up a huge database of more than 30 billion real-world images, captured as players explored parks, streets and landmarks with their cameras.
