So what are these changes?
The app also stated it may collect biometric data with the lines: "We may collect biometric identifiers and biometric information as defined under U.S. laws, such as faceprints and voiceprints, from your User Content. Where required by law, we will seek any required permissions from you prior to any such collection."
The problem with this last statement is its vagueness. It does not specify which laws it plans to follow or what exactly it means by faceprints and voiceprints. It's also unclear how collecting this type of data helps users of the app at all.
It should be noted that around this same last year, TikTok was threatened with being banned in the U.S. by the Trump administration. Then-president Donald Trump called the app a "national security threat" because of its ownership by a Chinese company.
TikTok attempted to reassure the public by stating it only stores TikTok U.S. user data in its U.S. data centers and in Singapore. It was, however, banned in India a while ago too.