I'm building a mobile application and due to the data driven nature of the app, we ask users to enter their ethnicity. I was thinking about asking on the signup page, but perhaps this is not the right place to ask.

What is the standard list/selection method? Should it be single or multi-select? Also, does anyone know how to find a comprehensive list of ethnicities so nobody is left out? I've looked at various other websites but either this field isn't present or where it is the list is different.

I'm building an enterprise mobile application for health and medical purposes, and due to the data driven nature of the app we ask users to enter their ethnicity. It's entirely optional but it allows us to better tune our analysis which translates to better results for them. I was thinking about asking on the signup page, but perhaps this is not the right place to ask.

What is the standard list and selection method? Should it be single or multi-select? Is there a standard comprehensive list of ethnicities that includes everyone? I've looked at various other websites but either this field isn't present or where it is the list is different.

I'm building a mobile application, specifically a signup page. Due to the data driven nature of the app we ask users to enter their ethnicity. Perhaps this is not the right place to ask this, but what is the standard list/selection method? I'm looking for advice on single vs multi-select and a suggested comprehensive list of ethnicities so nobody is left out. I've looked at various other websites but either this field isn't present, and where it is the list is different.

Please retag or move as appropriate, though hopefully this is at home here.

I'm building a mobile application and due to the data driven nature of the app, we ask users to enter their ethnicity. I was thinking about asking on the signup page, but perhaps this is not the right place to ask.

What is the standard list/selection method? Should it be single or multi-select? Also, does anyone know how to find a comprehensive list of ethnicities so nobody is left out? I've looked at various other websites but either this field isn't present or where it is the list is different.