Contactless Membership Card Reader/Writer  

The SocketScan S550, a contactless membership card reader/writer, is designed to facilitate tap-and-go smart card and NFC applications. It combines the latest 13.56 MHz contactless technology with Bluetooth 5 connectivity.

The S550 supports ISO 14443 Type A and B smart cards, ISO 15693 tags, MIFARE®, FeliCa®, and most NFC tags and devices compliant with ISO 18092 standard. This makes S550 ideal for a broad range of solutions, such as hands-free verification for physical and logical access control and inventory tracking. The S550 supports two Bluetooth modes: HID Keyboard Emulation (for native app support) and App Mode (for customer app development using our capture SDK interface).

With a compact design and a rechargeable lithium-ion battery for power, the S550 is extremely portable and convenient for use anytime, anywhere with most Bluetooth-enabled smartphones and tablets. 


Watch the S550 product demonstration webinar:



  • Works with iOS, Android and Windows® Bluetooth-enabled devices

  • Meets Accessory Design Guidelines for by Apple devices (Release R7) – Compliant with Apple, Android, and Windows product recommendations.

    • HID (Keyboard Emulation) profile available for native app support.

    • Capture SDK available for custom app development.

  • Reading – Fast NFC and RFID Reader (HF tags, labels, smart devices).

  • Writing – Write/Encode, lock, unlock tags.

  • Long Lasting Battery - Power to last up to 16 hours.

  • User Feedback - Intuitive LED indicators and melodies let users monitor battery, Bluetooth connection and scanning status at a glance. 

  • HID Mode (default) - No software installation required when using the NFC and RFID Reader/Writer in Bluetooth HID mode.

  • Application Integration – Socket Mobile’s Capture SDK enables easy integration in your applications to improve business productivity with fast, efficient and reliable data transfer over Bluetooth wireless technology.

  • Wireless (Bluetooth) - Reading for iOS, Android and Windows mobile devices with long-range Bluetooth connection of 330 feet (100m).

  • Easy Updates - The S550 firmware can be updated over Bluetooth using an iOS or Android app. A Library of PCSC Models and Reader templates is also provided to simplify designing with RFID technology.

  • Designed and assembled in the USA

  • Developer Support Available

  • 1-Year Warranty


  • Dimensions
  • Reading Performance
  • RFID Reader Type
  • Power and Batteries
  • Environmental
  • Wireless Communications



HF RFID Tags Supported:

  • ISO15693: Vicinity Card
  • ISO/IEC 14443 A and B: Mifare, Sony FeliCA
  • Compliant with EPC GEN 2 HF and ISO 18000-3 mode 3
  • ISO 18000-3 mode 3: EPC GEN 2 HF
  • NFC: ISO/IEC 18092
  • ThinFilm: NFC Barcodes
  • Proprietary: Several
  • Peer-to-Peer
  • Card Emulation

Write Mode:
Write mode is supported using the PCSC protocol over BLE. Compatibility is subject to the card type, content and authentication level. Please, contact Socket Mobile at to discuss your requirements.

Maximum RFID Read Range:
0.4" - 2" (10-50mm)




NFC/RFID front-end:
NXP PN5180

Carrier frequency:
13.56 MHz (RFID HF, NFC)

Read/Write Speed:

26 kbps (ISO 15693), 106kbps (ISO 14443), 212/424kbps (ISO 18092)

Integrated, 54mm x 40mm, balanced




1000 mAh Lithium - Ion Battery

Charge Time:
4 hours

Battery Life - Per Full Charge:
Standby time: 15 hours
Active Operation: 2,400 reads

Note: Battery life varies depending on ambient temperature, read attempts, and age of battery.




Operating Temperature:
-20° to 50° C (-4° to 122° F)

Storage Temperature: 
-40° to 70° C (-40° to 158° F)

Relative Humidity: 
95% at 60° C (140° F) (non-condensing), 4 days
Drop Specifications: 
Multiple 4 ft. drops to concrete

Tumble Specification: 
250 cycles at 1.64 ft. (0.5 m) (500 drops), IEC60068-2-31, IEC60068-2-32




Bluetooth Radio: 
Bluetooth, Version 5

Bluetooth Range: 
Up to 100 m (330 ft.) depending on environment, range limit is usually due to the Host Device (phone, tablet or notebook)

Bluetooth Profiles: 
Basic Mode – HID (Human Interface Device) Keyboard Emulation.
Application Mode – RDR (RFID Reader only) and PC/SC (for Read & Write) enabled by the SDK.

*Basic Mode is the Factory Reset (default) Bluetooth connection.