Multifunctional Bracelet | Integrated with Key & Safety Features
(Academic Project – Punjab Engineering College)
1. Problem & Need
• Hostel/PG students often misplace or forget keys.
• Traditional keychains are bulky, inconvenient, and easy to lose.
• Women need discreet safety tools that blend into everyday wear.
• A solution was required that ensures security, style, and safety in one wearable accessory.
2. Concept & Ideation
• Proposed a wearable bracelet to discreetly hold a key.
• Aimed to combine functionality with fashion – a stylish, ergonomic accessory.
• Brainstormed features like twist/slide key access, whistle, retractable knife/spike for emergencies.
• Focus: Convenience for students + Safety for women.
(1) Early Sketches
(1.1) Early Sketches
3. User Persona
Age: 18–25 years
• Hostel/PG residents with active lifestyles
• Require minimal, practical, and safe accessories
• Women benefit from hidden safety functions
4. Design Development
• Basic Sketches & Prototypes → explored form, key integration, and safety features.
• Survey & Feedback → validated student needs for ease, style, and security.
• Design Iterations → refined aesthetics + ergonomics for daily wear.
(4) Survey Answers
(4.1) Survey Answers
5. Material Selection
• Bracelet Body: TPU / Medical-grade silicone (flexible, hypoallergenic, waterproof).
• Key Holder & Locking Mechanism: Stainless steel / Anodized aluminum (durable, corrosion-resistant).
• Safety Components: High-impact polymer housing for whistle & hidden features.
6. Key Features
• Hidden Key → discreet, quick access; replaces bulky keychains.
• Whistle → doubles as a socket to hold the key + safety alarm.
• Spike/Knife → retractable tool for emergency defense or cutting.
• Knurled Grip → texture for secure handling in emergencies.
• Aesthetic Appeal → sleek, unisex, customizable in colors/finishes.
(6) Isometric View
(6.1) 2D View
7. Future Enhancements
• Smart Integration: Sensors in bracelet + door lock → automatic keyless entry.
• Safety Expansion: Notifications on forced entry attempts.
• Enhanced Defense Tools for women’s safety.
(7) 3D Model
8. Final Outcome
• A multifunctional safety bracelet that seamlessly combines:
• Convenience (key storage)
• Safety (whistle, knife/spike, grip)
• Style (modern, customizable, everyday wear)
• Redefines how fashion and function meet in personal accessories.
