1 files changed, 20 insertions, 1 deletions

diff --git a/updates/2013/ccc-breaks-apple-touchid.en.md b/updates/2013/ccc-breaks-apple-touchid.en.md
index 6dda2840..7a14c0cb 100644
--- a/updates/2013/ccc-breaks-apple-touchid.en.md
+++ b/updates/2013/ccc-breaks-apple-touchid.en.md
@@ -1,6 +1,6 @@
 title: Chaos Computer Club breaks Apple TouchID
 date: 2013-09-21 22:04:00 
-updated: 2013-09-24 17:14:29 
+updated: 2013-09-24 17:30:27 
 author: frank
 tags: update, pressemitteilung, biometrie, biometrics, apple, touchid, fingerprint
 
@@ -43,6 +43,25 @@ bit moist and then placed onto the sensor to unlock the phone. This
 process has been used with minor refinements and variations against the
 vast majority of fingerprint sensors on the market.
 
+**Update:**
+
+The process described above proved to be somewhat unreliable as the
+depth of the ridges created by the toner was a little too shallow.
+Therefore an alternative process based on the same principle was
+utilized and has been demonstrated in an extended video available
+[here](http://www.heise.de/video/artikel/The-iPhone-5s-Touch-ID-hack-in-detail-1966044.html "Refined TouchID hacking process"). First,
+the residual fingerprint from the phone is either photographed or
+scanned with a flatbed scanner at 2400 dpi. Then the image is converted
+to black & white, inverted and mirrored. This image is then printed onto
+transparent sheet at 1200 dpi. To create the mold, the mask is then used
+to expose the fingerprint structure on photo-senistive PCB material. The
+PCB material is then developed, etched and cleaned. After this process,
+the mold is ready. A thin coat of graphite spray is applied to ensure an
+improved capacitive response. This also makes it easier to remove the
+fake fingerprint. Finally a thin film of white wood glue is smeared into
+the mold. After the glue cures the new fake fingerprint is ready for
+use.
+
 \
 "We hope that this finally puts to rest the illusions people have about
 fingerprint biometrics. It is plain stupid to use something that you