iButton

iButton

A highly durable chip with a unique address from Maxim Integrated Products (www.maximintegrated.com) that is used for many purposes, such as building access, personal information, asset management, guard tours and tracking. Housed in a 16mm aluminum or stainless steel can that looks like a watch battery, iButtons are small enough to be attached to a key fob or finger ring.

Data are transferred in and out of the iButton when the can makes momentary contact with a reader/writer connected to a computer via a simple Maxim interface (see 1-Wire).


iButton and Reader
Looking like a watch battery, this iButton is resting on top of the reader. iButtons are rugged identification devices, and their top and side are the two contacts.







A Unique Serial Number
Every iButton has its own serial number laser etched into the case.
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References in periodicals archive ?
Tenders are invited for autonomous temperature recorders such as iButton DS1922E or analogue.
For the Boston study, dime-size iButton sensors were clipped to belt buckles or bags, while for the Alabama study, slightly larger HOBO Pendant sensors were clipped to subjects' shoes.
The iButtons were placed on the exterior and interior faces of grape clusters (see photo of iButton in grape cluster on page 49).
In addition, we recorded air temperature using an iButton temperature logger (Maxim Integrated, San Jose, CA) programmed to take 1 reading every hour for the duration of the breeding season.
Lastly, we installed an iButton temperature logger (Maxim Integrated Products, San Jose, CA) on the northeastern aspect of each post in 2010 and 2011.
To investigate the influence of temperature on reproduction, six iButton temperature loggers were deployed throughout the reef array in 2013.
We then calculated the mean and maximum buffering provided by tree hollows at different depths by subtracting the temperature of the internal ibutton from that of the external one and disregarding the first hour before and after sunset and sunrise to allow time for equilibration.
Dishes were sealed with parafilm, creating internal conditions of 25 C and 90% RH when measured with a data logger (Hygrochron iButton, Maxim Integrated, San Jose, California).
Temperature within the sediment was monitored at 2 and 7 cm depth using iButton dataloggers (DS-1922L, Maxim Integrated, San Jose, CA) attached to acrylic plastic supports.
Each chamber top was fitted with an iButton (Maxim) temperature sensor that logged air temperature inside the chamber at 5-min intervals.
The POS peripheral options include MSR, iButton, smart card reader, RFID reader, fingerprint reader and barcode scanner.
Maxim Integrated (NASDAQ: MXIM) has introduced its DS1925 iButton temperature logger to monitor cold chain and other temperature sensitive products or processes for longer duration sessions.