The HID® Signo™ Reader 20 is an advanced multi-technology contactless smart card reader tailored for secure access control, time and attendance, visitor management, asset tracking.

The HID® Signo™ Reader 20 is a multi-technology contactless smart card reader designed for secure access control. It supports various credential technologies, including HID Mobile Access® via Bluetooth and NFC.
technical characteristics of SIGNO™ READER 20
- Supported Credential Technologies:
- 13.56 MHz: Seos®, iCLASS SE®, iCLASS®, MIFARE DESFire® EV1/EV2/EV3, and MIFARE® Classic.
- 125 kHz: HID Prox®, Indala® Prox, Dorado® Prox, and EM Prox legacy credentials.
- Mobile access via Bluetooth and NFC, including Apple Wallet credentials.
- Communication Protocols:
- Open Supervised Device Protocol (OSDP) for secure bidirectional communication.
- Wiegand interface compatibility.
- Physical Specifications:
- Dimensions: 45 mm x 121.5 mm x 19.5 mm (1.77 in x 4.78 in x 0.77 in).
- Weight: Approximately 95 grams.
- Operating temperature: -35°C to +66°C (-31°F to +150°F).
- Protection rating: IP65 for robust outdoor performance.
- Performance Features:
- Secure storage of cryptographic keys on certified secure element hardware.
- Surface detection for automatic recalibration and optimized read range.
- Read range: 40–100 mm.
- Design:
- Slimline mullion mount with a black bezel and silver trim.
- Tri-color LED and buzzer for user feedback.
This reader is designed to be future-proof, supporting remote management and easy upgrades. You can find more details on the HID Global website
Primary Applications of SIGNO™ READER 20
The HID® Signo™ Reader 20 is a versatile device with a range of applications. Here are some common use cases:
- Access Control: It is widely used to secure doors, gates, and other restricted areas in offices, residential buildings, and industrial facilities.
- Time and Attendance: Organizations use it to track employee attendance and working hours efficiently.
- Visitor Management: It helps manage visitor access and monitor their movements within a facility.
- Asset Tracking: The reader can be employed to track the movement of assets within a building or campus.
These use cases highlight its adaptability and effectiveness in enhancing security and operational efficiency.
HID® SIGNO™ READER CREDENTIAL PROFILE
The HID® Signo™ Readers support a wide range of credential profiles to ensure compatibility and security. Here are some key credential profiles:
- Standard Profile: Supports a variety of contactless low and high-frequency credentials.
- Seos Profile: Focused on advanced security and interoperability, ideal for environments requiring high-level encryption.
- Smart Profile: Designed for smart card compatibility and enhanced functionality.
These profiles also include support for HID Mobile Access® via NFC and Bluetooth®, as well as credentials stored in Apple Wallet.

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