smart keyfob

タイトルまたは説明

A fob, or more commonly called a key fob, is a small security hardware device with built-in authentication used to control and secure access to network services and data. The key fob displays a randomly generated access code, which changes periodically, usually every *0 to *0 seconds. A user first authenticates themselves on the  with a personal identification number (PIN), followed by the current code displayed on the device.
    is also a word used to describe a key chain and several other similar items and devices. The word fob is believed to have originated from watch fobs, which existed as early as ***8. The fob refers to an ornament attached to a pocket-watch chain. Key chains, car starters, garage door openers, and keyless entry devices on hotel room doors are also called fobs.