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Two-Way OTP Security

Two-Way OTP Security Authentication — Next-Gen Unhackable IoT Security Solution

Two-Way OTP Security Authentication Technology

Unlike conventional portable OTP methods, this technology processes Two-Way OTP security authentication by connecting IoT devices and authentication servers via mobile networks.

No user intervention or separate communication networks are required, reducing installation and operating costs.

✅ No user intervention ✅ No separate network ✅ Real-time auth & alerts ✅ Hacking prevention
🔒
IoT Device
EPISLOCK
OTP generation & transmission
Reverse OTP re-authentication
📱
HANKEY App
Android/iOS
Auth complete & notification
Control command
☁️
Auth Server
Cloud

Conventional vs HANZOOM

Conventional OTP
  • ❌ User manually enters OTP number
  • ❌ Separate OTP device required
  • ❌ Risk of Bluetooth signal interception
  • ❌ Password exposure risk
  • ❌ Separate network infrastructure needed
  • ❌ Risk of key loss or duplication
VS
HANZOOM Two-Way OTP
  • ✅ Automatic two-way auth without user intervention
  • ✅ All control via one smartphone
  • ✅ OTP+PKI integrated security blocks hacking
  • ✅ No password exposure risk
  • ✅ Leverages mobile communication network
  • ✅ Digital key — impossible to lose or duplicate

Supported Communication Technologies

📶BLE

Bluetooth 4.0/4.1+ Short-range wireless

📡Wi-Fi

Wireless LAN Internet connectivity

📲NFC

Near-field communication Card tag method

🔊2.4GHz

Wireless communication Wide coverage

🔌RS-485

Wired serial communication Industrial standard

Common Hardware Specifications

MCU-based security authentication module applied to all products

CPUARM®-based 32-bit MCU
Flash Memory128KB
RAM64KB SDRAM
Security ModuleTwo-Way OTP security authentication module (firmware, time-sync method)
RF InterfaceBLE (Bluetooth 4.0/4.1+)
Security ProtocolOTP, PKI
AudioBuzzer (Open/Close Alarm)

Brand System

EPISLOCK
IoT Device Brand

IoT device brand for remotely controlling devices via OTP authentication. Applied to door locks, mailboxes, lockers, fireproof doors, and more.

HANKEY
One-Touch Security App

Security application for one-touch control of all IoT devices. Supports Android / iOS.