diff --git a/README.md b/README.md
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+++ b/README.md
@@ -2930,6 +2930,7 @@ A small group of programmers wants to change how we code—before catastrophe st
 * [Kevin Burke](https://kev.inburke.com/kevin/install-homebrew-go/) - Make your Go Binaries Homebrew Installable
 * [Rich Trouton](https://derflounder.wordpress.com/2014/02/16/managing-the-authorization-database-in-os-x-mavericks/) - (2014) Managing the Authorization Database in OS X Mavericks | and probably for later versions too
 * [Yubico Support](https://support.yubico.com/support/solutions/articles/15000015045-macos-logon-tool-configuration-guide) - macOS Logon Tool Configuration Guide : Enable Yubico 2FA at macOs login screen and for screensaver
+* [OSXDaily](http://osxdaily.com/2017/11/22/use-touch-id-sudo-mac/) - (2017) How to Use Touch ID to Authenticate sudo on Mac OS
 
 ## Code signing ###
 * [Laszlo Pusztai](http://www.laszlopusztai.net/2012/12/05/hdiutil-requires-sudo-for-readwrite/) - (2012) hdiutil Requires sudo for Read/Write
@@ -5778,6 +5779,7 @@ Raw
 * [Mike Malone](https://smallstep.com/blog/everything-pki.html) - (2018) Everything you should know about certificates and PKI but are too afraid to ask
 * [SecurityTrails](https://securitytrails.com/blog/google-hacking-techniques) - (2019) Exploring Google Hacking Techniques
 * [Yubico Support](https://support.yubico.com/support/solutions/articles/15000015045-macos-logon-tool-configuration-guide) - macOS Logon Tool Configuration Guide : Enable Yubico 2FA at macOs login screen and for screensaver
+* [OSXDaily](http://osxdaily.com/2017/11/22/use-touch-id-sudo-mac/) - (2017) How to Use Touch ID to Authenticate sudo on Mac OS
 
 ## GPG
 * [Charles Zachary Lockhart](http://irtfweb.ifa.hawaii.edu/~lockhart/gpg/) - GPG Cheat Sheet