https://wccftech.com/pokemon-poke-ball-plus/

Alongside the Nintendo Switch games Pokemon Let’s Go Pikachu, Pokemon Let’s Go Evee, Nintendo announced a new peripheral that will make players feel like a true Pokemon trainer, the Poké Ball Plus. Following the announcement, the peripheral’s official website has gone live, providing additional details.

The Poké Ball Plus official website revealed, among other things, how the peripheral is used in the two Nintendo Switch Pokemon games as well as how it will work with Pokemon GO, the popular smartphone game released a while back.