/challenges-projects/design-challenges/designforacause/b/blog/posts/fingerprint-skeleton-key---vibration-sensor-module-battery---design-for-a-cause-challenge---blog-post-8IntroductionHi! This will be my eighth blog for this challenge. In the last update ( Fingerprint Skeleton Key - Key Picking Mechanism Part 1 - Design for a Cause Challenge - Blog Post #7 ) I've started and finished most of the build for the key pickingen-USTelligent Community 12