From https://about.facebook.com/realitylabs/projectaria/

"Participants will only record in either Facebook offices (once they reopen), wearers’ private homes (with consent from all members of the household), or public spaces, and won’t record in private venues without written consent from such places. Before any information gathered in a public place is made available to our researchers, it will be automatically scrubbed to blur faces and vehicle license plates."

So we anonymize all the content collected in public. I don't have the stats for the face blurring algorithm, and while you can ask for your data to be removed, we don't provide locations/times. These are good suggestions though.