There is also a watch-like peripheral (mostly worked on by Nintendo) for the game called Pokémon Go Plus that allows you to basic things like throw a Poké Ball. It pairs with your phone and has a rumble and flash feature when you come across or interact with a Pokemon in the real world. The idea is that you can enjoy the world around you, instead of focusing only on your phone.
According to Shigeru Miyamoto, Pokémon Go Plus reminds him of Pokémon Snap. Miyamoto added that he likes the idea of kids wearing the Pokémon Go Plus that is paired with a parent’s phone. That way kids and parents can play Pokémon Go together.