Common Belongings Reconnected Daily
How FindBack Works
A privacy-engineered 4-stage lifecycle to protect users and guarantee verified returns.
Submit Report
Describe what was lost or found with approximate location, category, date, and safe photos.
Intelligent Matching
Our multi-attribute algorithm compares spatial coordinates, timestamps, brand, color, and descriptions.
Ownership Challenge
Private chat & verification challenges prevent fraudsters from claiming items they do not own.
Safe Handover
Meet at a designated safe exchange zone and complete the dual-confirmation return receipt.
Deterministic Multi-Modal Matching Engine
FindBack doesn’t rely on keywords alone. Every report is cross-analyzed across 6 weighted mathematical dimensions to output a confidence score from 0 to 100%.
Geospatial
Haversine distance decay curve
Time Delta
Hours/days elapsed difference
Category
Exact taxonomy & hierarchy match
Attributes
Brand, color, model, breed overlap
Semantic Text
Embedding vector cosine similarity
Image Similarity
Palette and visual tag overlap
Never Expose Your Home Address or Sensitive IDs
We engineered FindBack so users can find items without compromising their safety:
- Approximate Location Circles: Public viewers see a ~500m blurred radius, never your exact pin.
- Masked Verification Attributes: Identifying serial numbers, IDs, and wallpapers are kept hidden for ownership challenges.
- Private Secure In-App Chat: Exchange details and questions without revealing your personal phone number or email.
Verification Challenge Example
“What photo is on the lockscreen, and what color is the silicone case?”
“It has a photo of my golden retriever, and a navy blue Spigen rugged armor case with a small notch.”