OlertBrooch is a wearable device and mobile application that provides personal safety. When in danger, the user throws the wearable device to trigger an alert message to contacts with the user's last location. Even if the user is unconscious, the loss of connection between devices will trigger the alert. It addresses concerns about accidental or forced cancellation of alerts to still ensure contact notification. A base station maintains a connection with the user's phone to trigger an alert if the phone is switched off or destroyed. The system allows users to add contacts to protect each other.

1. Your personal safeguard
HackShanghai hardware hack 3rd place

2. What is Olert
+
OlertBrooch
wearable device mobile application

3. OlertBrooch
Olert
Necklace

4. How Does It Work

5. When in danger, throw away the
wearable device.
Your contacts will receive an alert
message with your last tracked
location.
!

6. Passive Protection
- No need to actively trigger the alert
- The lost of connection between the devices would
trigger the alert
- Even when the victim is unconscious or constrained

7. What if…?

8. What if I accidentally
trigger the alert?
You can turn off tracking mode or designate safe
locations where you won’t be tracked. If you
accidentally trigger and alert, you can always enter
your password to cancel it.

10. What if the attacker force
me to enter password?
You can enter a predesignated FALSE password.
The alert will appear to be cancelled on your
phone, yet a even more urgent alert will be sent to
your contacts.

11. What if the attacker switch
off or destroy my phone?
The base station maintains a heartbeat
connection with your phone, it would
automatically send the alert when your
phone is accidentally switched off

12. Protect each other
- Add contact people directly from mobile phone contact
list.
- You can have a network of closest family and friends
that would protect each other.

14. Olert Team
from PKU, NTU, OsakaU