Can

1
CantTouchThis
JSM Hammer
Jun Wei Chuah Shihong Ng Ming Yang Koh
2
Project Concept/Motivation

• Concept
• This project will act as deterrence against
  laptop thefts, providing the owner a greater
  degree of security.
• The prototype integrates off-the-shelf embedded
  components, such as motion-sensing accelerometer,
  buzzer, RFID reader and tags for passive
  activation of the device and the Tmote Sensor.
• Motivation
• A laptop owner today is unable to leave his/her
  laptop unattended without risk of the laptop
  being stolen.
• Using our prototype system, an alarm will be
  activated if the laptop is being handled by
  unauthorized personnel.

3
Competitive Analysis

• Caveo Anti-Theft PC Card
• http//caveo.com/products/anti-theft.htm
• The product works by sensing motion and emitting
  an alarm when its moved.
• Our product will automatically activate the lock
  when it does not sense the users presence

• Kensingston Cable Lock
• http//us.kensington.com/html/11179.html
• The product works by physically locking the
  laptop to a secure object.
• Our product requires less user input and is a
  smaller and lighter solution.

4
Requirements

• Functional Requirements
• Detects the presence of the user when in range
  and disarms the device.
• Arms the device when user is out of range.
• Allows software arming and disarming of device.
• Detects movement of laptop when armed and sounds
  alarm accordingly.
• Non-functional Requirements
• Reliability When armed, the device will detect
  significant movement and sound the alarm.
• Usability The device will require minimal user
  input after installation.
• Threshold Non-extended small movements will be
  tolerated by the system.
• Timing The alarm will trigger within 5 seconds
  of detection of motion.

5
Technical Specifications
Microcontroller Moteiv Tmote Sky http//www.mot
eiv.com/products/tmotesky.php Buzzer Generic
Buzzer http//export.farnell.com/jsp/endecaSearc
h/partDetail.jsp?sku1192515 2.50 ea Motion
sensor Spark Fun Electronics Triple Axis
Accelerometer Breakout - ADXL330 http//www.spark
fun.com/commerce/product_info.php?products_id692
29.95 ea Rechargeable battery SANYO
RLITH-5-2VL SANYO ML2430-VM1 Battery http//www.
action-electronics.com/batcomp.htm 6.75 ea
Wireless keycard components RFID Reader
Texas Instruments Series 2000 Micro Reader
RI-STU-MRD1 http//www.ti.com/rfid/docs/manuals/p
dfSpecs/RI-STU-MRD1.pdf Quote pending RFID Tag
Texas Instruments Card Transponder
TRP-R4FF http//www.ti.com/rfid/docs/manuals/pdfS
pecs/TRP-R4FF.pdf Quote pending Voltage step-up
converter Texas Instruments TPS61027 http//foc
us.ti.com/docs/prod/folders/print/tps61027.html
3.15 ea