Post : Dry erase marker opens all hotel room doors
URL : http://hackaday.com/2012/10/02/dry-erase-marker-opens-all-hotel-room-doors/
Posted : October 2, 2012 at 2:01 pm
Author : Mike Szczys
Tags : arduino, dry erase, exploit, hotel room, lock, marker, onity
Categories : arduino hacks, security hacks

http://hackadaycom.files.wordpress.com/2012/10/dry-erase-opens-hotel-room-doors.png

If you're carrying around an exposed circuit board and a bunch of wires people are going to notice you. But a dry erase marker won't turn any heads. And this one holds its own little secret. It acts as a master key for hotel room door locks (http://blog.spiderlabs.com/2012/10/pentesting-hotels-with-pens.html) .

This is really more of a repackaging hack. The exploit (http://hackaday.com/2012/07/25/arduino-resistor-and-barrel-plug-lay-waste-to-millions-of-hotel-locks/) is already quite well-known. The Onity brand of key card locks most commonly used in hotels have a power jack on the bottom that doubles as a 1-wire communications port. The first published proof of concept used an Arduino board and a simple adapter to unlock any door in under one second. Now that hardware has been reduced in size so that it fits in the hollow shell of a dry erase marker. Even better, the felt tip has been replaced with the appropriately sized barrel jack. Check out the ultra-fast and inconspicuous use of it after the break. We think using this is no more obvious than actually having the key card.

Read more of this post (http://hackaday.com/2012/10/02/dry-erase-marker-opens-all-hotel-room-doors/#more-87031)

Add a comment to this post: http://hackaday.com/2012/10/02/dry-erase-marker-opens-all-hotel-room-doors/#respond

--
WordPress.com | Thanks for flying with WordPress!