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Presented by : ARJUN.B.M USN: 1RL05CS007 Dept Of CSE RLJIT, Dodballapur Under the guidance of : Basavaraj.S.Pol Asst. Prof Dept of CSE, RLJIT

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JAVA RINGS..

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<ul><li>In the summer of 1989, Dallas Semiconductor Corp. </li></ul><ul><li>produced the first stainless-steel-encapsulated memory </li></ul><ul><li>devices utilizing the Dallas Semiconductor 1-Wire </li></ul><ul><li>communication protocol. </li></ul><ul><li>By 1990, this protocol had been refined and employed </li></ul><ul><li>in a variety of self-contained memory devices. </li></ul><ul><li>Originally called &quot;touch memory&quot; devices, they were </li></ul><ul><li>later renamed &quot;iButtons.&quot; </li></ul>

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<ul><li>One of the first impressive devices powered by the Java Card </li></ul><ul><li>technology came in the form of now famous Java Rings at the Sun's </li></ul><ul><li>JavaOne conference, in March 1998. </li></ul><ul><li>The JavaRing is a tiny wearable computer with 6 kilobytes of RAM. </li></ul><ul><li>Six K may not sound like much, but it is 20 percent more memory </li></ul><ul><li>than the first computer ever used . </li></ul><ul><li>Even 6 K is enough to hold your secret codes, your credit cards </li></ul><ul><li>numbers, your driver license, other wallet contents, and even some </li></ul><ul><li>electronic cash. The ring can also store a few important URLs. </li></ul>

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<ul><li>The Java Ring is a wearable computer that can be used to </li></ul><ul><li>authenticate users to services on the Internet. A user only has to </li></ul><ul><li>push the ring on his/her finger on a Java Ring reader for about a </li></ul><ul><li>second. </li></ul><ul><li>The key issue about a wearable computer is not whether it is a ring or another form factor: the deciding point is that we will always </li></ul><ul><li>have it with us . Many aspects of computing change once there </li></ul><ul><li>is no need to go to a special room to get at the computer. </li></ul>

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<ul><li>A Java Ring is a finger ring that contains  </li></ul><ul><li>small microprocessor with built-in capabilities for the user. </li></ul><ul><li>stainless-steel iButton </li></ul><ul><li>Java virtual machine </li></ul><ul><li>applet s (little application programs) </li></ul><ul><li>Real Time Clock </li></ul><ul><li>The rings were built by Dallas Semiconductor. </li></ul>

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A Small Microprocessor <ul><li>Consist of 32k ROM </li></ul><ul><li>6K of RAM and can be extended upto 134k RAM </li></ul>

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<ul><li>The jewel of the Java Ring is the Java iButton – </li></ul><ul><li>The i Button is a computer chip enclosed in a 16mm thick stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go. </li></ul><ul><li>Designed to be fully compatible with the Java Card 2.0 standard. </li></ul><ul><li>It is small and portable enough to attach to a key fob, ring, watch, or other personal items </li></ul>JAVA Powered iButton

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<ul><li>An i Button uses its stainless steel </li></ul><ul><li>can : </li></ul><ul><li>It is an electronic communications </li></ul><ul><li>interface. Each can has a data contact, </li></ul><ul><li>called the 'lid ', and a ground contact, </li></ul><ul><li>called the 'base' . Each of these contacts </li></ul><ul><li>is connected to the silicon chip inside. </li></ul><ul><li>Grommet : </li></ul><ul><li>The two contacts are separated by a polypropylene grommet. </li></ul>iButton Components

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Layout of iButton

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Types of iButton <ul><li>Memory iButton </li></ul><ul><li>Java Powered Cryptographic iButton </li></ul><ul><li>Thermochron iButton </li></ul>

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Internal details Cryptographic iButton

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<ul><li>Information is transferred between iButton and a PC through Blue Dot Receptor </li></ul><ul><li>You simply touch iButton to a Blue Dot Receptor </li></ul><ul><li>These receptors uses 1-wire communication protocol for data transfer </li></ul>Blue Dot Receptor

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Blue Dot Receptors <ul><li>Serial Port Adapter </li></ul><ul><li>Parallel Port Adapter </li></ul><ul><li>USB Port Adapter </li></ul>

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1-Wire Communication Protocol <ul><li>Reset synchronizes the entire bus </li></ul><ul><li>‘ Select’ a slave device is selected for communication </li></ul><ul><li>Once a specific device is selected all other devices are ignored </li></ul>

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JVM <ul><li>It supports Java card 2.0 specification </li></ul><ul><li>It allows the Java Ring to navigate through Java Operating environment </li></ul><ul><li>Provides Automatic garbage Collection for efficient reuse of memory space </li></ul>

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<ul><li>With experience designing the E-Commerce operating </li></ul><ul><li>system and VM for the Crypto iButton hardware platform. </li></ul><ul><li>With a Java iButton, a vast number of existing Java </li></ul><ul><li>programmers could easily learn to write applets that could </li></ul><ul><li>be compiled with the standard tools available from Sun </li></ul><ul><li>Microsystems, loaded into the Java iButton, and run on </li></ul><ul><li>demand to support a wide variety of financial </li></ul><ul><li>applications. </li></ul><ul><li>The Java Card 2.0 specification provided the opportunity </li></ul><ul><li>to implement a useful version of the JVM and runtime </li></ul><ul><li>environment with the limited resources available to a </li></ul><ul><li>small processor. </li></ul>Java Connection

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<ul><li>Access control to buildings and equipment </li></ul><ul><li>Secure network login using challenge/response authentication </li></ul><ul><li>Storage vault for user names and passwords </li></ul><ul><li>User profile for rapid Internet form-filling </li></ul><ul><li>Digital signatures for e-commerce </li></ul><ul><li>United States Postal Service Postal Security Device for PC Postage downloadable over the Internet </li></ul><ul><li>Digital photo ID and fingerprint biometrics </li></ul><ul><li>Thermochron applications </li></ul>Uses / Applications of Java Ring

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<ul><li>Java ring is wearable </li></ul><ul><li>Completely controlled by the user </li></ul><ul><li>Rapid Zeroization </li></ul><ul><li>Personalization </li></ul>Advantages

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<ul><li>Latest Technology </li></ul><ul><li>Can be highly successful in market in future </li></ul><ul><li>More durable because of its stainless steel armour </li></ul><ul><li>Can be attached to various personal accessories </li></ul>Conclusion