Skip to content

Hacking Hotel Keys and POS Systems

Weston Hecker

Weston Hecker demonstrates magnetic secure transmission (MST) injection attacks against hotel electronic keycards and point-of-sale terminals to manipulate cash drawers and brute-force guest room credentials.

Summary

Flaws in Hotel Keycard Infrastructure

Hotel electronic lock systems and property management systems (PMS) rely on predictable data formats encoded onto guest keycards. Weston Hecker analyzes cryptographic and structural weaknesses in room key encoding schemes across hospitality management platforms.

Automating MST Injection and Brute-Force Key Generation

Using modified Magnetic Secure Transmission (MST) transmitters, the researcher demonstrates how an attacker can capture legitimate card tracks and extrapolate adjacent guest room codes, enabling automated brute-force attacks against electronic guest room locks.

Keystroke Injection Against Point-of-Sale Terminals

The presentation reveals vulnerabilities in retail and hotel point-of-sale (POS) card readers, showing how malformed magnetic stripe waveforms can inject arbitrary keystrokes directly into POS operating systems to bypass authentication and open cash drawers.

Related talks

Main Stage·48 min

  • DEF CON
  • Hardware
  • Date: Jul 2001
  • Location: Las Vegas

Technodragon

Technodragon explores hardware mods at DEF CON 9, examining hardware-modding and practical defenses.

hardware-moddinghardware-hackingsoldering+1