Is it anonymous?
Staff do not log in and the form does not ask for a name, so a response is not linked to an account. Each scan does record city, country and device type, and anything a person types in the comment is visible. Say this plainly to staff so they trust it.
Will a sad-face answer email someone?
Yes. Every sad face emails the account owner. Make sure the owner email goes to someone appropriate for staff feedback, or use a separate campaign that HR monitors.
Can I stop customers answering?
Put the code only in staff-only areas. Anyone who scans the code can answer, so placement is the control.
Can I run a full engagement survey with many questions?
No. This is a one-question pulse with an optional comment. It sits alongside, not instead of, a full engagement survey.
Does each staff area count as a location?
Codes are created per location in your account. If your sites are already locations for customer campaigns, the staff campaign uses those same locations.