Local Share uses GPS-based geo-cells to create a private, temporary bulletin board for everyone within 200 meters of you.
Visit local-share.tech on any device — phone, tablet, or desktop. No app download required. Your browser asks for location permission to determine your geo-cell.
We use your GPS signal to calculate a private "geo-cell" — a roughly 200m × 200m grid square. Only the cell ID is sent to our server, never your exact coordinates.
Choose any display name (no sign-up needed) and type your message, link, or note. Hit send and your post instantly appears for everyone in the same geo-cell.
Anyone within ~200 meters who opens Local Share sees your message in real time. They can reply or post their own messages to the shared local feed.
All messages automatically expire and are permanently deleted after 1 hour. No data lingers, no history is stored. The feed stays fresh and private.
The core innovation of Local Share is our approach to spatial quantization. Instead of treating the earth as a continuous map of precise coordinates, we treat it as a discrete grid of "Geo-Cells." This process is mathematically known as spatial indexing.
// The Geo-Cell Calculation Logic
Precision = 0.002; // Roughly 200 meters
Latitude_Cell = Math.floor(User_Latitude / Precision);
Longitude_Cell = Math.floor(User_Longitude / Precision);
Cell_ID = "cell_" + Latitude_Cell + "_" + Longitude_Cell;
By dividing the world into 200-meter increments, we ensure that two users in the same coffee shop, classroom, or office building will generate the exact same Cell_ID. Crucially, because this rounding happens **locally** in the browser, our servers never receive the user's high-precision GPS coordinates. We only receive the "Quantized ID," making it impossible to pinpoint an individual's exact location.
Data persistence is the enemy of privacy. In a traditional social network, your "digital footprint" grows indefinitely. Local Share employs a strict **Ephemeral Data Protocol** to ensure that information is only available when it is relevant.
Every document, text snippet, and link posted to a Geo-Cell is governed by a Time-To-Live (TTL) of 3,600 seconds. Our backend employs automated cleanup workers that purge expired records every minute.
We do not use persistent cookies or tracking IDs. Every session is unique to the device and the current Geo-Cell. When you leave the area or close the browser, your association with the cell is terminated.
To achieve an "instant" sharing feeling, we utilize a real-time event-driven architecture. When a user enters a Geo-Cell, their browser establishes a secure WebSocket listener for that specific Cell_ID.
This "Pub/Sub" (Publisher/Subscriber) model means that data transfers are pushed to users rather than pulled. When you "drop" a link, it is published to the cell channel, and all active listeners in that cell receive the update within milliseconds. This architecture bypasses the need for traditional "request/response" cycles, making Local Share feel like a physical extension of the room you are in.
Local Share is built on the principle of **Anonymous by Design.** Unlike tools that "anonymize" data after collection, we simply do not collect identifying data in the first place.
No Email or Phone Number required for use.
No storage of IP addresses in association with Geo-Cells.
Full compliance with ephemeral data standards for local networking.
No. Local Share is completely anonymous. Just choose a display name when you first post — no email, no password, no sign-up.
The range depends on your device's GPS accuracy. In open outdoor areas, geo-cells are very precise. Indoors, accuracy may vary slightly due to GPS signal strength, but the matching is always within a reasonable local range.
All messages are permanently and automatically deleted from our servers after 1 hour. There is no archive, no history, and no way to retrieve expired messages.
No. Only people whose device is currently located within your geo-cell can see your messages. Someone 500 meters away would be in a completely different cell and cannot see your feed.
Yes, Local Share is completely free. There are no paid tiers, no subscriptions, and no hidden fees.
No sign-up needed. Just open Local Share and start posting to your local area.
Open Local Share