Geohot, who is well known for iOS jailbreaking and hacking the PS3, has released a simple rooting tool for the Samsung Galaxy S5 and other Android devices such as the Galaxy S4 Active, Nexus 5 and Galaxy Note 3 (AT&T and Verizon). The tool called, Towelroot is very simple to use and great for Verizon and AT&T users who can't access their device's locked bootloader. Here's how to use Towelroot to root your GS5 or the other Android devices listed above:
1. Navigate to www.towelroot.com on your GS5 browser.
2. Tap the Towelroot icon in the center of your display and hit "OK" when you receive the "this file can harm your device" warning.
3. Swipe down to open the Notifications list when you see the "Starting Download" message. Tap the "tr.apk" file to launch.