https://www.cnet.com/news/for-the-pixel-3-google-is-betting-on-a-chip-to-bring-android-security/

In July, Google also announced the Titan Security Key, which doesn't actually use the Titan chip.

The Pixel 3 would be the first time Google's own security chip is in the hands of everyday people, as the previous Titan chip was used only internally, on Google's data centers. In a blog post Wednesday, Google detailed how the Titan M works and why it makes the Pixel 3 the most secure Android phone you can get.