What happens when parents walk in with kids? Does little Bobby need his own account for everything he's going to touch and pickup?

What if I walk in with a friend on our way to somewhere else and they don't have an account and I'm just getting something quick, do they not get in and wait outside? Everybody in the video was just one person or all had an account/phone.

Overall, I hope this works and expands. Checkout lines can be a hassle at times.