There will be specific audit protocols in place that will describe the process and manner for any contact with voters. In addition, all members of the audit staff have official ID’s. On-site visits will likely be performed by teams.
I would not be surprised if any and all public facing audit staff will be wearing body-cams to document all interactions.
Mostly, the canvass will document actual buildings existing at the addresses given on ballots. Much of that review will likely be performed online on Google maps or the Maricopa auditor website listing of parcels.
The SEIU is a clown show.