Pokémon Go is always on my phone screen when I’m out and about – and my phone’s battery suffers because of it. So I’m very interested in Adventure Sync, an upcoming feature that rewards you even when you’re not playing and your phone is tucked in your pocket.
Adventure Sync converts your walking distances into in-game rewards, so you can earn buddy candy and incubate eggs just as if the game was on-screen.
You also gain further rewards for hitting weekly activity milestones.
Source: Eurogamer Pokémon Go will reward your exercise, even when you're not playing