diff --git a/Appendix-A:-Test-Sites.md b/Appendix-A:-Test-Sites.md
index 4f2dc52..4007aa7 100644
--- a/Appendix-A:-Test-Sites.md
+++ b/Appendix-A:-Test-Sites.md
@@ -53,6 +53,9 @@ If you would like to submit a test page to be added to this list, please post th
 ### :small_orange_diamond: Other
 - [AudioContext](https://audiofingerprint.openwpm.com/) - **h**ttps://audiofingerprint.openwpm.com/
 - [Battery](https://pstadler.sh/battery.js/) <sup>1</sup> - **h**ttps://pstadler.sh/battery.js/
+- [Cache Fingerprinting](http://cookieless-user-tracking.herokuapp.com/) - **h**ttp://cookieless-user-tracking.herokuapp.com/
+   * It does this by assigning a unique variable in a cached script (see [#436](https://github.com/ghacksuserjs/ghacks-user.js/issues/436#issuecomment-392069853))
+   * Article: https://robertheaton.com/2014/01/20/cookieless-user-tracking-for-douchebags/
 - [Canvas Blocking Detection](https://kkapsner.github.io/CanvasBlocker/test/detectionTest.html) - **h**ttps://kkapsner.github.io/CanvasBlocker/test/detectionTest.html
    * See [Issue 174](https://github.com/ghacksuserjs/ghacks-user.js/issues/174)
 - [CSS Exfil Vulnerability](https://www.mike-gualtieri.com/css-exfil-vulnerability-tester) - **h**ttps://www.mike-gualtieri.com/css-exfil-vulnerability-tester