Multiple voices activating Siri

Yes! The only device that has Voice Recognition is the HomePod for accessing personal information. On the iPhone, any person can activate Siri, but if the response would include any Personal Information the phone would need to be unlocked first for authentication.

cilldara59 wrote:

Can Siri respond to more than one voice?

Yes, Siri can respond to multiple voices. Which is why Siri will require the phone to be unlocked in order to do many tasks.