Java Ring

Seminaron

# introduction# history# components in java ring# architecture# working# security# application# conclusion# refrence

JAVA RINGA Java Ring is a finger ring that contains a small microprocessor with built-incapabilities for the user, a sort of smart card that is wearable on a finger. SunMicrosystemss Java Ring was introduced at their Java One Conference in 1998and, instead of a gemstone, contained an inexpensive microprocessor in a stainlesssteel iButton running a Java virtual machine and preloaded with applets (little application programs). The rings were built by Dallas Semiconductor.

Workstations at the conference had "ring readers" installed on them thatdownloaded information about the user from the conference registration system. This information was then used to enable a number of personalized services. For example, a robotic machine made coffee according to user preferences, which it downloaded when they snapped the ring into another "ring reader."

The Java Ring is an extremely secure Java-powered electronic token with acontinuously running, unalterable real-time clock and rugged packaging, suitable for many applications. The jewel of the Java Ring is the Java iButton -- a onemillion transistor, single chip trusted microcomputer with a powerful Java Virtual Machine (JVM) housed in a rugged and secure stainless-steel case.

HistoryIN SUMMER of 1989, Dallas Semiconductor corp. produced the first stainless- steel encapsulated memory device called ibutton.The ibutton is the main component of java ring.Java ring was introduced at their javaone conference in 1998.

ComponentsJava virtual machine.RAMROMReal-time clockIbuttonBlue dot reciptor

ibuttonThe jewel of java ribg is the java ibuttona one million transistor, single chip trusted microcomputer with a powerfull Java Virtual Machine(JVM) housed in a rugged and a secure stainless steel case.

Originally called touched memory devices,they were later renamed ibuttons.packaged like batteries, ibuttons have a single active electrical contact on the top surface, with the stainless steel shell serving as ground.

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Blue dot reciptorBlue dot receptor lets you communicate with ibuttons from pcs to microprocessor and embeded systems.The read/write operation will be done by this blue dot receptor provided by RS232 serial port adaptor.Receptor cable connects to the USB port of PC or any embeded system.The receptor itself affixes to any accesible spot.The information is transferred between the ibutton and pc with momentary touching java ring.

WorkingJava ring is a programme with the applets according to our application.For specific class of user specific java applets is preloaded in the java ring.All the information of the user is stored in the java ring. User simply presses the signets of the java ring against the blue dot receptor and the system connected to the receptor performs the function that the applets instructs to.

securityThis barrier substrate and the triple layer metal construction techniques employed in the silicon fabrication effectively deny access to the data stored in NVRAM. If any attempt made to penetrate these barriers, the NVRAM data is immidiately erased.Java rings are authorized through Personal Identification Numbers(PINs) so that one can steal a persons ring and use that ring.

ApplicationAlthough java rings arent widely used yet, such ribg or similar devices could have a number of real- world applications such as startin your car and having all your vehicle components (such as seats, mirrors and radio selections) automatically adjusts to your preferences.Providing sevurity.Personalised services.

ConclusionHighly durable.

Highly secure.

Used in personal computing.

Referencewww.javaworld .com

http://electronics.howstuffworks.com

http://people.cs.uchicago.edu

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