4. In the summer of 1989, Dallas Semiconductor Corp.
produced the first stainless-steel-encapsulated memory
devices utilizing the Dallas Semiconductor 1-Wire
communication protocol.
By 1990, this protocol had been refined and employed
in a variety of self-contained memory devices.
Originally called "touch memory" devices, they were
later renamed "iButtons."
5. One of the first impressive devices powered by the Java Card
technology came in the form of now famous Java Rings at the Sun's
JavaOne conference, in March 1998.
The JavaRing is a tiny wearable computer with 6 kilobytes of RAM.
Six K may not sound like much, but it is 20 percent more memory
than the first computer ever used .
Even 6 K is enough to hold your secret codes, your credit cards
numbers, your driver license, other wallet contents, and even some
electronic cash. The ring can also store a few important URLs.
6. The Java Ring is a wearable computer that can be used to
authenticate users to services on the Internet. A user only has to
push the ring on his/her finger on a Java Ring reader for about a
second.
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
have it with us. Many aspects of computing change once there
is no need to go to a special room to get at the computer.
7. A Java Ring is a finger ring that contains
small microprocessor with built-in capabilities for the user.
stainless-steel iButton
Java virtual machine
applets (little application programs)
Real Time Clock
The rings were built by Dallas Semiconductor.
9. The jewel of the Java Ring is the Java iButton –
The iButton 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.
Designed to be fully compatible with the Java Card 2.0 standard.
It is small and portable enough to attach to a key fob, ring, watch,
or other personal items
JAVA Powered iButton
10. An iButton uses its stainless steel
can :
It is an electronic communications
interface. Each can has a data contact,
called the 'lid', and a ground contact,
called the 'base'. Each of these contacts
is connected to the silicon chip inside.
Grommet :
The two contacts are separated by a polypropylene
grommet.
iButton Components
14. Information is transferred between iButton and a PC
through Blue Dot Receptor
You simply touch iButton to a Blue Dot Receptor
These receptors uses 1-wire communication protocol
for data transfer
Blue Dot Receptor
15. Blue Dot Receptors
Serial Port Adapter
Parallel Port Adapter
USB Port Adapter
16. 1-Wire Communication Protocol
Reset synchronizes the entire bus
‘Select’ a slave device is selected for communication
Once a specific device is selected all other devices are ignored
17. JVM
It supports Java card 2.0 specification
It allows the Java Ring to navigate through Java
Operating environment
Provides Automatic garbage Collection for efficient
reuse of memory space
18. With experience designing the E-Commerce operating
system and VM for the Crypto iButton hardware platform.
With a Java iButton, a vast number of existing Java
programmers could easily learn to write applets that could
be compiled with the standard tools available from Sun
Microsystems, loaded into the Java iButton, and run on
demand to support a wide variety of financial
applications.
The Java Card 2.0 specification provided the opportunity
to implement a useful version of the JVM and runtime
environment with the limited resources available to a
small processor.
Java Connection
19. Access control to buildings and equipment
Secure network login using challenge/response
authentication
Storage vault for user names and passwords
User profile for rapid Internet form-filling
Digital signatures for e-commerce
United States Postal Service Postal Security Device for
PC Postage downloadable over the Internet
Digital photo ID and fingerprint biometrics
Thermochron applications
Uses / Applications of Java Ring
20. Java ring is wearable
Completely controlled by the user
Rapid Zeroization
Personalization
Advantages
21. Latest Technology
Can be highly successful in market in future
More durable because of its stainless steel armour
Can be attached to various personal accessories
Conclusion