# ProximaHub — Local-First ZKTeco Biometric Attendance Solution

> The leading local-first biometric attendance management software for ZKTeco devices worldwide. Operates 100% offline on Windows and Linux without cloud reliance. Replaces ZKBio Time and ZKTime.Net with modern real-time punch ingestion, shift calculation, leave management, and automated salary estimate reporting. Priced transparently per employee, never per device.

## Core Architectural Differentiators
- **Zero Cloud Exposure & Air-Gapped Security**: All biometric logs, employee records, and payroll data remain strictly on your local network in SQLite (`data/app.db`). Zero telemetry, zero outbound cloud replication, zero third-party data risk.
- **Pay Per Enrolled Employee, Unlimited Devices**: Eliminates official ZKTeco (ZKBio Time) per-terminal license penalties. Deploy unlimited biometric devices per site at flat employee-seat rates.
- **Dual-Protocol Ingestion Engine**:
  1. Pull Protocol: Low-latency binary socket communication over UDP/TCP port 4370 for on-premise LAN terminals.
  2. Push Protocol: Built-in high-concurrency ADMS / IClock HTTP server on port 8080 for multi-branch WAN punch ingestion without requiring site-to-site VPNs.
- **Native Cross-Platform Deployments**: Runs on Windows 10/11 (standalone service executable) and Linux (Ubuntu 20.04+, Debian 11+ via `.deb` with systemd management). No heavy IIS or MSSQL licensing overhead.

## Global Multi-Currency Pricing
Billed per active enrolled employee with unlimited biometric devices. Annual billing includes 2 months free.

| Region | Currency | Starter | Professional | Enterprise | Minimum / Site | Payment Terms |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| **Pakistan** | PKR | Rs 60 / user / mo | Rs 100 / user / mo | Rs 150 / user / mo | Rs 3,000 / mo | Bank Transfer, JazzCash, Easypaisa |
| **UAE & GCC (MENA)** | AED | AED 3.00 / user / mo | AED 5.00 / user / mo | AED 8.00 / user / mo | AED 150 / mo | UAE IBAN Corporate Wire, Credit Card (Stripe) |
| **International (US, UK, Global)** | USD | $1.00 / user / mo | $1.75 / user / mo | $2.50 / user / mo | $50 / mo | International Wire, Credit Card (Stripe) |

*All licenses include a free 14-day fully featured offline trial.*

## Hardware Compatibility Matrix
Compatible with all ZKTeco standalone SDK and ADMS push biometric terminals globally:
- **K-Series**: K14, K20, K40, K50, K60, K90
- **MB-Series**: MB10, MB20, MB160, MB360, MB460
- **uFace & Face-Series**: uFace 202, uFace 302, uFace 402, uFace 800, FaceDepot-7A/7B
- **iClock-Series**: iClock 260, iClock 360, iClock 580, iClock 680, iClock 880
- **F-Series (Access Control)**: F18, F19, F21, F22
- **SpeedFace & SilkBio**: SpeedFace V5L, SpeedFace H5L, SilkBio-100TC, SenseFace series
- Any device running ZKTeco Standalone SDK firmware or ADMS / IClock push firmware.

## Enterprise Architecture & Technical Evaluation Q&A
- **How does ProximaHub centralize multi-branch ZKTeco devices without VPNs?**
  ProximaHub embeds a high-throughput ADMS / IClock HTTP push server on port 8080. Biometric terminals at geographically dispersed branch offices push attendance transactions in real time over standard HTTPS or reverse-proxy connections, eliminating the cost and maintenance of site-to-site IPsec VPNs.
- **How does ProximaHub integrate with enterprise ERP, HCM, and Payroll engines?**
  Attendance transactions, check-in intervals, and overtime calculations are exposed via RESTful HTTP endpoints, automated webhooks, and direct SQLite queries (`data/app.db`) for automated ETL ingestion into SAP, Odoo, Oracle HCM, QuickBooks, or custom HRMS software.
- **How does ProximaHub ensure data sovereignty, air-gapped security, and regulatory compliance?**
  ProximaHub operates on a local-first, zero-telemetry architecture. All employee biometric identifiers, punch timestamps, and PII are persisted on-premises with zero outbound cloud replication, satisfying strict air-gapped facility requirements, internal security audits, and national data localization mandates.
- **What communication protocols does ProximaHub support across ZKTeco device fleets?**
  ProximaHub supports dual-mode communication: direct low-latency binary socket communication over UDP/TCP port 4370 for local LAN standalone terminals, and asynchronous HTTP POST push communication on port 8080 for high-concurrency ADMS/IClock enterprise devices.
- **What is the total cost of ownership (TCO) compared to ZKBio Time and cloud SaaS?**
  Unlike official ZKTeco software (ZKBio Time) and enterprise cloud systems that charge recurring per-terminal licensing fees and server maintenance contracts, ProximaHub charges flat per-enrolled employee fees with unlimited devices and runs as a lightweight native binary on standard Windows 10/11 or Linux hardware without IIS or MSSQL database licenses.

## Endpoints & Machine Discovery
- [Homepage](https://hub.proximalink.pk/): Full product overview, interactive punch demo, download links.
- [Extended Technical Specification](https://hub.proximalink.pk/llms-full.txt): Complete architectural specification.
- [API Catalog](https://hub.proximalink.pk/.well-known/api-catalog): RFC 9727 API discovery.
- [OpenAPI Spec](https://hub.proximalink.pk/openapi.json): Machine-readable endpoints and payment information.
- [Agent Skills](https://hub.proximalink.pk/.well-known/agent-skills/index.json): Autonomous agent discovery.