Wiegand interface is a world-renowned wiring standard for interconnecting cards, readers, and controllers within the access control system.

A Wiegand device refers to a type of electronic device commonly used in access control systems. It is named after its inventor, John R. Wiegand.

A Wiegand device consists of a card or key fob embedded with a Wiegand wire or coil. The wire is typically made of stainless steel and is surrounded by insulation. When the Wiegand device is brought close to a Wiegand reader, the wire interacts with the reader’s magnetic field, generating an electrical pulse. This pulse is then interpreted by the access control system, allowing or denying access based on the information encoded in the device.

Wiegand devices are known for their reliability, durability, and resistance to tampering, making them popular in security systems.

These devices follow a similar basic function that we see in bank cards. However, a bank card will use a band of ferromagnetic material instead of wiring. The wiring in Wiegand devices makes the systems harder to duplicate.

In summary, Wiegand devices are cards and any kind of data reader that operates on a special wire communication system. These need to be used with a Wiegand sensor in order to work.