enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Radio-frequency identification in schools - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency...

    Specifications [13] of the active RFID at West Cheshire College: Ultra wideband RFID tags emit brief radio frequency signals across the entire 6.35 to 6.75 GHz frequency band. Average battery lifespan of a RFID tag is seven years. Receivers, which can receive tag signals up to 328 feet away, are located throughout the campus buildings, in order ...

  3. Radio-frequency identification - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_identification

    Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...

  4. Chipless RFID - Wikipedia

    en.wikipedia.org/wiki/Chipless_RFID

    Chipless RFID tags are RFID tags that do not require a microchip in the transponder. RFIDs offer longer range and ability to be automated, unlike barcodes that require a human operator for interrogation. The main challenge to their adoption is the cost of RFIDs. The design and fabrication of ASICs needed for RFID are the major component of ...

  5. Wireless identity theft - Wikipedia

    en.wikipedia.org/wiki/Wireless_identity_theft

    Wireless identity theft is a relatively new technique for gathering individuals' personal information from RF-enabled cards carried on a person in their access control, credit, debit, or government issued identification cards. [6] Each of these cards carry a radio frequency identification chip which responds to certain radio frequencies.

  6. Automatic identification and data capture - Wikipedia

    en.wikipedia.org/wiki/Automatic_identification...

    [2] AIDC is the process or means of obtaining external data, particularly through the analysis of images, sounds, or videos. To capture data, a transducer is employed which converts the actual image or a sound into a digital file. The file is then stored and at a later time, it can be analyzed by a computer, or compared with other files in a ...

  7. Contactless smart card - Wikipedia

    en.wikipedia.org/wiki/Contactless_smart_card

    Contactless smart card. A contactless smart card is a contactless credential whose dimensions are credit card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit tickets, bank cards and passports. There are two broad categories of contactless ...

  8. RFID skimming - Wikipedia

    en.wikipedia.org/wiki/RFID_skimming

    An RFID Blocking Card is an RFID-blocking device that operates without a battery by receiving the RFID signal from a card reader or skimmer and it scrambles the RFID signal making it unreadable by any device. Most RFID Wallets try to stop the electromagnetic fields interacting with RFID cards whereas RFID Blocking cards use 'Active Jamming ...

  9. Anti-theft system - Wikipedia

    en.wikipedia.org/wiki/Anti-theft_system

    Anti-theft system. Anti-theft systems protect valuables such as vehicles and personal property like wallets, phones, and jewelry. [1][2][3] They are also used in retail settings to protect merchandise in the form of security tags and labels. [4] Anti-theft systems include devices such as locks and keys, RFID tags, and GPS locators.