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Offline-first guard app keeps Indian housing society gate logs intact without network

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Security guards at Indian housing society gates record many visitors daily, often in areas with patchy mobile data. The GateKeeperZero guard app was built so that logging works offline, with actions queued locally and synced once connectivity returns. Each queued action carries an idempotency key so that retries do not create duplicate entries on the server. Failures are classified as temporary, which stay queued and retry up to five times, or permanent, which move to a dead-letter queue for attention. The team also limits how long visitor data stays on shared gate phones and clears the queue on logout.

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