L / 04Open lab

LnF Lost and Found

Hyperlocal lost-and-found that surfaces items to people physically nearby.

ReactSupabasePWA

"If you lose something, the people most likely to find it are the ones standing near where you lost it."

IOverview

Why it exists.

Most lost-and-found systems are global. You post an item, and your post sits next to thousands of others, surfaced to nobody in particular. The matchmaking is wrong — physical proximity is the strongest signal, and it's the one most platforms ignore.

LnF is hyperlocal by design. When you publish a lost or found activity, the platform surfaces it to people physically nearby — transit commuters who use the same metro line, store owners along your walking path, security desks on your campus, street vendors on your block. Targeting the audience is part of posting.

The activity stream is local-first: each report shows distance and recency, and you can filter by radius. Match reports come back with image hints, location anchors, and a reputation signal. PWA so it lives on a home screen with offline tolerance and real-time alerts when something reports nearby.

IIWhat it does

The surface.

01

Hyperlocal nearby surfacing

Live location is part of the post. Items surface to people physically near where they were lost or found.

02

Audience targeting

Transit commuters, store owners, security desks, vendors, apartment groups, campus volunteers. The right eyes, not just every eye.

03

Activity stream with full lifecycle

Lost / found / resolved states. Each report is searchable by item, colour, and place.

04

Match reports with image hints

Credibility signals built into the response. Photos and location anchors cut through noise.

05

Installable PWA

Home-screen install, offline tolerance, push-style nearby alerts. Lives on the phone, not in a browser tab.

06

Coverage and outcomes

Local response rate, returned-today count, and average alert distance. Trust through visible numbers.

IIIThe stack

Under the hood.

Frontend
ReactVite
Backend
Supabase
Data
PostgresStorageAuth
PWA
Service Worker
Deploy
Vercel