GSS QR Code Access Control Reader is a secure, flexible door and lift access control solution that uses QR code scanning for fast, contactless entry. Designed for offices, residential buildings, co-working spaces, hotels and visitor management, the system includes a compact QR reader, a controller with relay door I/O, and full software support (SDK & API) for integration with third-party applications and building management systems. It supports time/date validity, one-time and recurring codes, usage limits, and remote issuance revocation ideal for guests, contractors, deliveries and temporary access. Key Features • Contactless QR scanning for fast, hygienic access • Controller with door relay, lock monitoring, exit button and tamper detection • Date/time validity, expiry, and scheduled access windows • One-time QR, multi-use QR, and recurring QR code issuance • Limitations & quota control- set max uses per code • Built-in real-time logging and audit trail (user, time, door, result) • Offline mode with secure caching and automatic sync when online • Supports encrypted QR (HOTP/TOTP or RSA signed tokens) for higher security • SDK (Windows/Linux) and RESTful API for seamless integration with PMS, ERP, visitor systems, and custom apps • Multi-door and multi-site management via centralized software • Easy installation- PoE or 12/24V power options; standard Wiegand/RS485/TCP interfaces • Optional touchscreen for on-device code generation or PIN fallback • Role-based admin controls and configurable event notifications (email/SMS/webhook) Technical Specs (typical) • Reader: 2D QR DataMatrix scanner; scan distance 5–50 cm (model dependent) • Controller: 1x relay output (lock), 1x auxiliary relay, 2x supervised inputs (door, exit), tamper switch • Network: Ethernet (TCP/IP), optional Wi-Fi LTE module • Power: PoE (802.3af) or 12–24 VDC • Operating temp: −20°C to +60°C; IP54 housing (IP65 outdoor option) • Memory: local event buffer (configurable), secure storage for offline auth • Protocols: REST API, MQTT/Webhook support, Wiegand/RS485 for legacy readers Integration & Developer Support • Full SDK with sample code (C#, Java, Python) and example projects • RESTful API endpoints for issuing, revoking, and validating QR codes; webhook event callbacks for live monitoring • API supports token-based auth, rate limits, and scoped API keys • Documentation, Postman collection, and technical support for system integrators • White-label options and multi-tenant deployments supported Benefits • Fast, low-cost deployment for temporary and permanent access scenarios • Eliminates physical cards for visitor and delivery workflows • Granular control over access windows and usage limits • Easy integration into existing security ecosystems (PMS, HR, Visitor Apps) • Improved auditability and traceability with timestamped logs • Scales from single-door installations to campus-level deployments Typical Use Cases • Visitor management (temporary check-in QR) • Hotel / short-term rentals (mobile QR for room access) • Corporate offices (contractor / vendor passes) • Logistics & deliveries (time-bound delivery access) • Lift/elevator floor access control (QR + floor mapping) • Events & co-working spaces (ticketed/limited access)