According to TheVerge, the social media app TikTok will start collecting FacePrints and VoicePrints under new privacy policy changes that are vague. If you are a user of TikTok, you might want to reconsider your usage. TikTok seems rather invasive to me.
TikTok updates US privacy policy to collect ‘faceprints and voiceprints’ (but won’t explain what they are)
What is a faceprint? TikTok won’t tell us.
www.theverge.com