Olá pessoal.. estou de volta depois de uma breve parada para as festas de final de ano e natal. Bem, mas vamos lá, hoje encontrei por acaso um interessante texto sobre Java Ring: “JAVA RING: A SEMINAR REPORT“.
Alguns trechos do texto:
A Java Ring is a finger ring that contains a small microprocessor with built-in capabilities for the user, a sort of smart card that is wearable on a finger. Sun Microsystems’s Java Ring was introduced at their Java One Conference in 1998 and, 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 that downloaded information about the user from the conference registration system.
E sobre as possibilidades:
At Celebration School, the rings have been programmed to store electronic cash to pay for lunches, automatically unlock doors, take attendance, store a student’s medical information and allow students to check out books. All of this information is stored on
the ring’s iButton. Students simply press the signet of their Java Ring against the Blue Dot receptor, and the system connected to the receptor performs the function that the applet instructs it to. In the future, the Java Ring may start your car.
Mobile computing is beginning to break the chains that tie us to our desks, but many of today’s mobile devices can still be a bit awkward to carry around. In the next age of computing, we will see an explosion of computer parts across our bodies, rather than
across our desktops.
Agora, prestem atenção neste parágrafo:
The Java Ring is a stainless-steel ring, 16-millimeters (0.6 inches) in diameter that houses a 1-million-transistor processor, called an iButton. The ring has 134 KB of RAM, 32 KB of ROM, a real-time clock and a Java virtual machine, which is a piece of software that recognizes the Java language and translates it for the user’s computer system.
Voicês sabiam que já existem SDK´s pra criação de aplicações encima do iButton? É, existe sim, vejam este texto:
To help get your iButton® and 1-Wire® application up and running quickly, we offer several Software Development Kits (SDKs) that ensure interoperability among all iButton applications. Most of our software examples are part of our SDKs. For an overview of each SDK, click on the links below. Encontrado neste link.
E pra quem quer realmente começar a programar para o iButton e Java Ring, podem optar pelo iButton Starter Kit. Segundo a fonte, The DS9092K iButton® Starter Kit provides the basic
hardware for a quick evaluation of the Maxim iButton family of products that communicate using the 1-Wire® protocol. The kit uses the USB port of a Microsoft Windows®-based Personal Computer running Vista™, XP SP2 (or higher), or Microsoft Server Operating Systems Windows 2003 or 2008. The kit includes several iButtons as well as an assortment of accessories. The easy setup process includes the free download of 1-Wire drivers and the OneWireViewer demonstration software to easily communicate with iButtons through the PC’s USB port.
Simplesmente espetacular.. pena que ando bem sem tempo (e dinheiro), senão embarcava no Java Ring..