Because iButtons use the company's 1-Wire protocol, the hardware needed for communicating with an iButton is inexpensive. Any PC, PDA or other computing device with the necessary ports and software can easily communicate to any iButton through our 1-Wire port adapters.
PC 1-Wire Connectivity
The DS1402D Blue Dot Receptors are iButton reader/probes that provide a convenient pipeline into the PC for iButton-to-PC communication. The receptor's cable connects to a USB, serial, or parallel-port 1-Wire adapter, whichever type of port you wish to use. The receptor itself easily affixes to any accessible spot on the front of the PC. The user can elect a quick information transfer with a momentary touch of the iButton to the Blue Dot. For hands-free operation the iButton can be snapped into the Blue Dot and remain there.
Each receptor contains two Blue Dots to accommodate instances where multiple iButtons are required for a transaction. A company's policy may, for example, require both an employee and a supervisor to authenticate access to sensitive data stored on a network server.
USB Port Adapters We offer two 1-Wire USB Port Adapters, the DS9490R and the DS9490B, both of which connect to any standard universal serial bus (USB) port. The DS9490R is designed to connect multiple 1-Wire/iButton devices to a PC or handheld through its RJ-11 connector. Attaching the DS1402D-DR8 Blue Dot Receptor to the RJ-11 connector is a popular way to interface a PC to a 1-Wire network comprised of multiple iButtons.
The DS9490B, in contrast, is designed to hold a single iButton, perfect for software authorization solutions. The DS9490 family of 1-Wire USB port adapters comes with the following features:
Internal 64-bit address
Communicates to all iButtons; can read but not write to DS198x EPROM iButtons
RJ-11 out; compatible with DS1402D-DR8 Blue Dot Receptor