Mobile flashlight access for rentals, fleets, and smart locks

FlashKeyLock turns a phone flashlight into a secure access key.

A production-minded platform for rental companies, property operators, and fleet teams that need time-bound lock access, device assignment, booking control, and audit-ready event history.

FlashKeyLock installed on a wooden door
FlashKeyLock hardware device and strike adapter
Optical pulse transmission ready

Platform

One product, four connected layers.

The landing site introduces the product, while the operational portals remain separated for platform admins, company teams, and booking customers.

Platform administration

Create companies, provision cloud storage, manage hardware, review logs, and control activation status.

Company operations

Owners, managers, and staff can manage inventory, bookings, documents, rental photos, and access grants.

Mobile access

End users receive booking credentials, select active bookings, and send encrypted optical keys from the app.

Smart lock controller

The embedded lock controller verifies device identity, shared-secret integrity, time validity, replay protection, and the requested access action before approving the lock operation.

3Role layers
24/7Access audit
8 moBattery target
OfflineOptical key path

Product

Built for rental operations where access changes constantly.

FlashKeyLock connects the web platform, mobile app, and smart lock controller into one access workflow for bookings, staff operations, and device control.

Vehicle fleets

Premium cars, bikes, scooters, and trucks can be assigned time-bound optical keys without handing over physical keys.

Hotels and rentals

Rooms, villas, storage units, and rental homes can be booked, assigned, opened, audited, and deactivated from one dashboard.

Remote assets

Warehouses, service rooms, and gated equipment can receive secure access even when BLE or Wi-Fi is not the primary path.

Access readiness
Access readinessLive device and booking state for operations teams.
Mobile booking
Mobile bookingCustomer booking and device key loaded in the app.
Optical transmit
Optical transmitEncrypted pulse transfer from phone flashlight to lock.

Secure Flow

Encrypted, time-bound access without sharing permanent keys.

Each booking can carry a bounded shared key, device ID, validity window, and access mode. The receiver validates the optical frame before it drives the lock relay.

Replay protection and tamper checks Mobile optical transmission On-device access validation Company-scoped reports and device inventory
  1. Platform admin provisions the company, cloud storage, rental inventory, and FlashKeyLock hardware.
  2. Company owner or staff creates bookings and generates a time-bound encrypted shared key.
  3. Customer signs into the mobile app and transmits the optical key through the phone flashlight.
  4. The lock controller validates device identity, time window, replay protection, and requested access action.
  5. Events sync back for audit, risk review, support, and booking history.

About Us

Built by a focused team across product, software, and hardware thinking.

FlashKeyLock is shaped through practical IT consulting, deployment experience, rental workflow design, and early hardware specification support.

Vishvas Karkera profile
Founder and Product Lead

Vishvas Karkera

Leads the FlashKeyLock product vision, rental workflows, demos, and customer-facing direction.

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Chandrahas Hemmady profile
Development and Deployment Consultant

Chandrahas Hemmady

Supports the web, mobile, and cloud deployment work as an after-hours IT consulting contributor.

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D. Giridhar Reddy profile
Concept and Hardware Specification Advisor

D. Giridhar Reddy

Contributed early product concept thinking and practical hardware specification guidance.

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Portals

Choose the right FlashKeyLock workspace.

Use these URLs for demos, operations, and stakeholder walkthroughs.