The document summarizes a seminar presentation on Java Ring. It introduces Java Ring as a wearable computer containing an iButton - a small programmable computer chip enclosed in stainless steel. The presentation covers the historical background of iButton technology, the technical details and components of iButtons, how information is gotten into and out of the Java Ring, potential application areas like building security, and the advantages and disadvantages of Java Rings.

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A
SEMINAR
ON
JAVA RING
Presented By:
Neha Aggarwal
Roll No. 1025/06
MCA 5th
Semester

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• Introduction
• What is JAVA ring?
• Historical Background
• Technical details
• What is iButton?
• Components of iButton
• Advantages of iButton over other Technologies
• Why called Java Ring?
• Information in & out of ring
• Application areas
• Advantages
• Disadvantages
• Conclusion
• References
CONTENTS

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Wearable Computer
Smart Card
Jewel of ring- iButton
INTRODUCTION
WHAT IS JAVA RING?

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• Developed by Dallas Semiconductor Corp. in 1989.
• Introduced at JavaOne Conference.
• Tested at Celebration School, just outside Orlando.
 Contains iButton, memory can be read or written by Blue-
Dot Receptor.
 Memory maintained in NVRAM by Lithium Energy supply.
 Manufactured with 8-byte serial number.
HISTORICAL BACKGROUND
TECHNICAL DETAILS

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 Enclosed in 16mm thick stainless steel can.
 Unique and unalterable address laser on its chip.
The Can and Grommet The 1-Wire Interface
WHAT IS iButton?
COMPONENTS OF
iButton

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JAVA CARD APPLET MODEL
 Client-Server Architecture
 Network protocol encapsulated in packets called APDU’s.
 APDU’s decoded.
 4 applet methods are: process, install, select & deselect.
GETTING INFORMATION INTO & OUT OF RING
Touch iButton to a Blue-Dot receptor connected to
a PC cabled to a 1-wire adapter attached to a spare
PC port.
WHY CALLED JAVA RING?

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APPLICATION AREAS
BUILDING SECURITY
CAR SECURITY
SAVE ELECTRONIC CASH
SECURED BANKING

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ADVANTAGES
Authentication
Secure
Easy & Convenient
DISADVANTAGES
Ring Loss
Cost

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REFERENCES
 www.javaworld.com
 www.iButton.com
 www.whatis.com
 www.wikipedia.org
CONCLUSION

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