iButton

iButton® devices are small, durably packaged modules with globally unique 64-bit digital addresses. An iButton device uses a 16mm stainless steel "can" as an electronic communications interface. The iButton can has a data contact, called the lid, and a ground contact, called the base. Each of the iButton contacts is connected to the silicon chip inside. The iButton base includes a flange to simplify attaching the iButton device to just about anything. Enhanced by our 1-Wire® communications protocol, iButton devices provide the ability to deliver or record data where other products cannot, such as in very harsh environments. An iButton device is ideal for any application where information needs to follow a person or object, such as temperature and humidity data logging, access control, asset tracking, and electronic cash (eCash) transactions.