WebTag: Smart Tag with Embedded Web Server
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The document proposes WebTag, a smart tag with an embedded web server that allows bidirectional communication. WebTag aims to emulate the Internet model on a small tag with limited memory and processing. It uses an RFID-based architecture along with sensors and a TCP/IP stack to enable access to tag contents via a web browser. An initial prototype demonstrated compression techniques, security measures, and the ability to remotely capture sensor data over Ethernet. Future work will focus on adding NFC support and further optimizations.
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WebTag: Smart Tag with Embedded Web Server
- 1. WebTag: Smart Tag with Embedded Web Server Juan Jose Echevarría, Jonathan Ruiz-de-Garibay, Juan Ignacio Vazquez Maite Álvarez, Ana Ayerbe
- 2. Outline Motivation WebTag Concept Architecture TCP/IP stack Compression Security Evaluation Conclusions Future Work WebTag: Smart Tag with Embedded Web Server
- 3. Motivation Use of radiofrequency identification systems in traceability and asset tracking growing every day. Systems are getting expert adding more functionalities. Theuse of sensors provide information about the product conditions. WebTag: Smart Tag with Embedded Web Server
- 4. RFID vs NFC Systems are usually based in RFID. RFID provides only one way communication. No interaction is allowed. NFC is bidirectional. Users can send info/data to the tag. WebTag: Smart Tag with Embedded Web Server
- 5. WebTag Concept Emulate the evolution of Internet web model in a tag. Bidirectional communication NFC. Embedded web server will have a small computational power and limited memory. Complex services that provide advanced features. Allow surfing contents. The objective is to create a new type of smart tag equipped with a set of sensors and a micro-embedded web server WebTag: Smart Tag with Embedded Web Server
- 6. Architecture Same architecture than other smart tags WebTag: Smart Tag with Embedded Web Server
- 7. Present Prototype Ethernet interface MS430 ultralow-power microcontroller (Texas) Set of sensors: Temperature Humidity Luminosity TCP/IPstack RTC (Real Time Clock) WebTag: Smart Tag with Embedded Web Server
- 8. TCP/IP Stack Based on Andreas Dannenberg stack: is an implementation of the TCP/IP protocol stack for small 8-bit or 16-bit microcontrollers. is open source. allow only one connection. No UDP. WebTag: Smart Tag with Embedded Web Server
- 9. Compression For example Headers TCP/IP lenght: 40 bytes Some fields don’t change during connection Send only the changes WebTag: Smart Tag with Embedded Web Server
- 10. Security Login 3 failed attempts blocks access Basic encryption Xor WebTag: Smart Tag with Embedded Web Server
- 11. Evaluation Tests made through the Ethernet interface Header compression: 50% Data compression: over 30% Transfer speed: 15kB second RAM usage: 2kB Small memory for sensors captures Only values with 5% change are stored for memory usage reduction WebTag: Smart Tag with Embedded Web Server
- 12. Conclusions The first state presents good results. Web browser to surf contents. Access control to the tag. WebTag: Smart Tag with Embedded Web Server
- 13. Future Work Include NFC capabilities Server improvements Improve compression Power management WebTag: Smart Tag with Embedded Web Server
- 14. Thank you Jonathan Ruiz-de-Garibay Pascual [email protected] MoreLab – Mobility Research Lab http://www.morelab.deusto.es WebTag: Smart Tag with Embedded Web Server