![]() More recent models use challenge–response authentication over radio frequency, so these are harder to copy and do not need line-of-sight to operate. These could be copied using a programmable remote control. Early electric key fobs operated using infrared and required a clear line-of-sight to function. They are used for activating such things as remote keyless entry systems on motor vehicles. Security tokens from RSA Security designed as key fobs.Īccess control key fobs are electronic key fobs that are used for controlling access to buildings or vehicles. Key fobs offering added functionalities connected to online services may require additional subscription payment to access them. In such cases the key often has a very large fob so that customers will not automatically pocket and walk off with the key after completing their ablutions. Some retail establishments such as gasoline stations keep their bathrooms locked and customers must ask for the key from the attendant. Tamagotchi) or other gadgets such as breathalyzers. ![]() As electronic technology continues to become smaller and cheaper, miniature key-fob versions of (previously) larger devices are becoming common, such as digital photo frames, remote control units for garage door openers, barcode scanners and simple video games (e.g. Many fobs are small flashlights, compasses, calculators, penknives, discount cards, bottle openers, security tokens, and USB flash drives. A fob may be symbolic or strictly aesthetic, but it can also be a small tool. Most commonly they are simple discs of smooth metal or plastic, typically with a message or symbol such as that of a logo (as with conference trinkets) or a sign of an important group affiliation. įobs vary considerably in size, style and functionality. A short "fob chain" was used to attach to items, like a pocket watch, placed in these pockets. Fob pockets (meaning 'sneak proof' from the German word foppen) were pockets meant to deter thieves. The word fob may be linked to the low German dialect for the word Fuppe, meaning "pocket" however, the real origin of the word is uncertain. For example, with the launch of a new movie or television show, those companies might partner with food companies to provide a character keychain in each box of cereal.Ī key fob is a generally decorative and at times useful item many people often carry with their keys, on a ring or a chain, for ease of tactile identification, to provide a better grip, or to make a personal statement. Keychains are small and inexpensive enough to become promotional items for larger national companies that might give them out by the millions. Businesses could place their names on promotional keychains that were three-dimensional for less cost than the standard metal keychains. In the 1950s and 1960s, with the improvement of plastic manufacturing techniques, promotional items including keychains became unique. A standard advertising keychain will carry the businesses name and contact information and often a logo. Keychains are commonly used to promote businesses. Keychains are one of the most common souvenir and advertising items. ( February 2018) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. ![]() Please help improve this section by adding citations to reliable sources.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |