Tails 4.6 is a monthly update that comes about a month after the Tails 4.5 release, which introduced Secure Boot support. This time, Tails received support for Universal 2nd Factor (U2F) USB security keys. This means that you can now use a U2F security key to authenticate in your Tails OS. U2F security keys enable and simplifies two-factor authentication (2FA) to make systems more secure. This new Tails release also updates the list of applications in the Favorites pinned item to make it easier for newcomers to discover some of Tails??? core features.