Wireless Authentication of Smart Doors using RFID

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Bruno Lewis
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1 Wireless Authentication of Smart Doors using RFID An Internet of Things Approach Austin Hentrup, Deyi Lu, and Peter Roldan March 19, 2016

2 Overview Goals Background System Overview Cost Progress

3 Project Objectives To design a door locking system that is convenient, secure, and connected To investigate the minimum price of such a system To allow the system to be managed remotely and safely To investigate the feasibility of RFID as a standard of security for modern businesses

4 Goals for an Office Door Locking System Fast and hassle-free to open Easy to install/maintain (fewer locksmith visits) Install without replacing current doorknobs No battery required User permissions can be edited wirelessly Simple management of many users Secure Authentication process takes less than 3s No direct contract required Cards can be terminated remotely Door can be overridden manually using existing metal keys RFID encryption is to be investigated Cost-effective

5 Conventional Methods Pros Cons Metal Key Magnetic Stripe Card Commonly Used Commonly Used Simple Design Cheap Requires contact and proper orientation Requires contact and proper orientation Easy to duplicate Easy to duplicate Static system Cards wear out over time Need to change lock when key is stolen

orientation Convenient Users can open doors quickly and without

6 Radio-Frequency Identification (RFID) Wireless Reading/writing of data can be done without contact, line-of-sight, or specific key orientation Convenient Users can open doors quickly and without hassle Administrators can easily manage user access rights and view logs remotely

7 RFID Door System

8 RFID Module Block Diagram

9 Comparison to LMU One Card System LMU One Card System Our RFID Authentication System Read Technology Magnetic Stripe Radio Frequency Identification Locking Mechanism Onity Door Lock Generic ANSI Electric Strike Plate Power Supply Battery Line Voltage Security Proprietary Custom Server Blackboard Transact Amazon Web Services Cost per card $0.20 $0.26 Cost per online door $3000 $71

10 What is Arduino? Open-source prototyping platform Atmega328P Microcontroller Carries out users instructions Designed with the beginner in mind but flexible for advanced users Free and user-friendly software

11 Yún Shield Linux Operating System Managed by Web GUI, SSH via LAN or WiFi Software & Firmware Configurable via Network

When access is granted, pressure is relieved from the keeper, and the

12 Electric Strike Plate The keeper blocks the door s latch bolt which prevents the door from being opened. When access is granted, pressure is relieved from the keeper, and the door can now move. Supplementary to current metal key and mag-stripe door locks Original keys can be kept as an override.

13 Electronic Hardware Cost Per Door Project Parts Cost RFID Reader $8 Electric Strike Plate $24 Yun Shield $30 Arduino Uno R3 $9 Total $71

14 A Simple RFID Circuit Switch Circuit LEDs RC522 RFID Reader Electric Strike Plate Arduino Uno 3

15 Reading an RFID Code Check if a new card is present Scan card code RFID Code format: d3 5d Pass information about the card to Yun Yun passes information to AWS

16 Amazon Web Services (AWS) Server Progress Created a basic administrator interface for door/client management Created directly with HTML, PHP, MySQL, etc. Node.js is used to make HTTP POST requests for communication between Arduino-server Aiming for simplicity and functionality Steps to complete before semester s end: Finalize server-side logic Bulk-registration of clients Investigate encryption methods for communication

23 Final Thoughts Construction is still underway for the outlined system RFID is a promising technology that has the ability to become the backbone of modern business security systems Current commercial solutions are prohibitively expensive, and these costs are not justified The Internet can provide a cheap, secure method for providing communication between embedded devices

24 Thank you Any Questions?

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