Active Virtual Fence Similar to other common tracking devices, this device will trigger an alert when user cross the (virtual) border. However, this device doesn't need additional infrastructure (SIM card, antenna, receiver, etc.). It utilizes existing Wi-Fi network in the building. Another main different is, it can detect user fraudulence. Although user could take the device off, leave it inside the coverage area, system is able to discover this and trigger an alert. The purpose of this devise is for protecting: inpatient in a hospital, children in a school/home, or pet. Pros: - Wearable - Cheap - Centralized control Cons: - No calling feature - Relatively short battery life - Limited range

1. Active Virtual Fence
An Active Electronic Protection System

2. Presentation Overview
• Background
• Comparison of Different Systems
• Usage
• Advantages
• Disadvantages
• Summary

3. Background
How if the patient is diagnosed with an infectious disease?

4. Background – cont’d
Not only is the hospital going to lose the time and cost of
treatment, but more than that, there's a possibility that disease
will spread throughout the population.

5. Background – cont’d
A locked ward = Hospital or Jail ?

6. Comparison of Different Systems
Patient Identification Bracelet
• Tracking ability: None
• Maximum distance: None
• Additional device: No
• Battery life: None
• Vulnerability: Yes
• Price: $0.11 - $2.20
Pros: Cheap, easy
Cons: Undetected

7. Comparison of Different Systems
Smart Watch Tracker
• Tracking ability: Yes (GPS, Wi-Fi)
• Maximum distance: Unlimited
• Additional device: Yes (GSM Sim Card)
• Battery life: 3 – 5 days
• Vulnerability: Yes
• Price: $20 - $100
Pros: Many features
Cons: Expensive, not durable

8. Comparison of Different Systems
Custom - RFID
• Tracking ability: Yes
• Maximum distance: 0 – 5m
• Additional device: Yes (R/W device $10 - $500)
• Battery life: Unlimited
• Vulnerability: Yes
• Price: $0.5 - $1
Pros: Tiny, easy, durable
Cons: Expensive (R/W device),
limited coverage range,
passive device

9. Comparison of Different Systems
Custom – WeMos Mini Wi-Fi
• Tracking ability: Yes
• Maximum distance: 10 – 30m
• Additional device: No
• Battery life: ~1 day
• Vulnerability: No
• Price: < $10
Pros: Cheap, active device,
centralized control
Cons: Short battery life,
limited coverage range

10. Summary of Comparison
System /
Features
PID Bracelet
Smart Watch
Tracker
Custom: RFID
Custom:
WeMos
Tracking Ability
Maximum Distance
Additional Device
Battery Life
Vulnerability
Price

11. Active Virtual Fence (AVF): Usage
• Inpatient
• Kids Monitoring:
– Playground
– Kindergarten
– Home
• Pet Identification

12. AVF: Advantages
• More information
– Individual item data tracking
– Read/write capability
• Fast
– No contact
– Invisible
– Time reading is in milliseconds
– Simultaneous reading of multiple items
• Beneficial for the stakeholder and community
– Patient management
– Disease control
• Not a new experience for user (avoid refusal)

13. AVF: Disadvantages
• Privacy invasion
• Additional resource allocation
– Administration
– Security
– Maintenance
• Network interference

14. AVF – Summary
• Useful device
• Wearable
• Value for money