---
title: Extending the Range of Your Car Key with Water or Your Head — HIGH T3CH
url: https://hight3ch.com/extending-the-range-of-your-car-key-with-water-or-your-head/
date: 2014-03-19
---

# Extending the Range of Your Car Key with Water or Your Head

Professor Roger Bowley unlocks his car from various distances, using waves from his key, brain and a big bottle of water.