Acroprint ARES III User Manual
Page 4
iButton
An iButton is a microcircuit, encapsulated in a stainless steel weather resistant button, of great durability and reliability (1,000,000 recordings per button).
Each iButton is a guaranteed, unique, never to be repeated, factory programmed ROM. Its 16-character serial number is kept in laser-cut poly-silicon
links not as stored magnetic charge! Because of its design and the strict control of the manufacturing process, the DS1990A iButton is an identifier that
cannot be counterfeited. It is appropriate for applications where absolute identification is required. Due to its great reliability, the iButton developed and
manufactured by DALLAS SEMICONDUCTOR has positioned itself solidly in the international market as a universal identifier of Persons, Objects and
Events. iButton dimensions are Height 5mm, Diameter 16mm.
The serial number of each iButton is physically the number that will identify each Guard, Supervisor, Recording Station, etc. The 16 character serial
number comes printed on the metallic surface of each button; starts with two big characters (digits or letters) located towards it's middle left, 12 smaller
positioned at a lower level and finally 2 big towards it's middle right.
Do not worry! the system will automatically read and assign each iButton serial num-
ber on the Assignments Folder (Tab).