Based on the locations of markings on President Biden's face - extending from the sides of his mouth, below his ears, and behind his neck - he could be using a full-face device that covers both the nose and mouth.

Source: https://www.dailymail.co.uk/health/article-12244251/What-sleep-apnea-Sleeping-disorder-suffered-Joe-Biden-sparked-new-health-concerns.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

“Knowing that SGRT will mean an end to full-face masks is such a positive, I know that it would have made a huge difference to my experience.”

Source: https://www.echo-news.co.uk/news/23342125.southend-hospitals-600-000-fundraiser-sgrt-systems/?ref=rss

The GMC, which brought the case against Dr Wolverson to the MPTS, does not have specific guidelines on examining women wearing full-face veils.

Source: https://www.express.co.uk/news/uk/1804487/gp-return-allowed-suspension-muslim-woman-veil

They got full-face and profile pics, tracked this fool to his car and got a good shot of him and his license plates leaving.

Source: https://www.fark.com/comments/12800560?utm_source=feed&utm_medium=comments&utm_campaign=fark