As RFID tags become prevalent in libraries, warehouses, healthcare, and retail, safeguarding the data they carry is more important than ever. RFID tags are fantastic for tracking and automation; however, they present a set of vulnerabilities such as data interception, cloning, and unauthorised access. In this blog, we'll present the best practices for keeping RFID systems secure and protecting the sensitive data they manage.
Understanding RFID Security Threats
RFID tags communicate wirelessly using radio waves and face several security risks, including:
Eavesdropping: Attackers can place an unauthorised RFID reader within range of an unencrypted RFID system and intercept signals.
Skimming and Cloning: An unauthorised user with a portable RFID reader can skim an RFID tag and illegally clone it to impersonate a legitimate object.
Unauthorised Access: Lack of access control around RFID readers enables attackers to alter tag data or behaviour.
Denial of Service (DoS): Attackers can jam or block communication between RFID tags and readers, causing service denial.
Recommendations for RFID Security Best Practices
Use Encryption and Authentication
Encryption, such as AES or DES, protects data transmitted between RFID tags and readers. Even if data is intercepted, it cannot be decrypted without the proper key. Mutual authentication between the tag and the reader adds another layer of identity verification before data transfer.
Limit Data Stored on Tags
Store minimal sensitive information on RFID tags. Use tags to reference secure, encrypted databases with access controls, reducing risk if a tag is lost or stolen.
Utilise Kill Commands and Password Protection
Many RFID tags feature a "kill" command to permanently disable them after use, ideal for retail and library checkouts. Password protection prevents unauthorised reading and writing of tag data.
Shield Sensitive Areas
Physically secure sensitive zones with Faraday cages or electromagnetic blockers to prevent unauthorised scanning of RFID tags.
Periodically Update and Monitor Systems
Regularly update RFID middleware and reader software to patch vulnerabilities. Monitor logs for suspicious activity indicating potential breaches.
Poxo's Approach to RFID Security
At Poxo, security is integral to every RFID deployment. Our RFID readers and tags include built-in encryption and authentication for secure communications. We help clients implement secure architectures incorporating access control, data minimisation, and system monitoring tailored to industry needs.
Whether deploying RFID in warehouses or libraries, Poxo ensures your data remains secure from start to finish—letting you focus on performance without worrying about breaches.