Proximity Card

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Proximity card is a generic name for contactless integrated circuit devices used for Access control or payment systems. It can refer to the older 125 kHz devices or the newer 13.56 MHz contactless RFID cards, most commonly known as contactless smartcards.

Modern proximity cards are covered by the ISO 14443 (Proximity Card) standard. There is also a related ISO 15693 (Vicinity Card) standard. Proximity cards, also known as prox cards have a range of 0-3 inches in most instances, allowing the user to leave the card in one's wallet, or purse. The price of the cards is also low, usually $2-$5 US, allowing them to be used in applications such as identification cards, keycards, payment cards and public transit fare cards.

Proximity cards use an LC circuit. An Integrated circuit, capacitor, and coil are connected in series. The card reader presents a field that excites the coil and charges the capacitor, which in turn energizes the IC. The IC then transmits the card number via the coil to the card reader. The card readers communicate in Wiegand protocol that consists of a data 0 and a data 1 circuit. The earliest cards were 26 bit. As demand has increased bit size has increased to continue to provide unique numbers. Often, the first several bits can be made identical. These are called facility or site code. The idea is that company Alice has a facility code of xn and a card set of 0001 through 1000 and company Bob has a facility code of yn and a card set also of 0001 through 1000.

See also

Access badge
Access control
Common Access Card
Credential
ID Card
Keycard
Magnetic stripe card
Oyster card
Photo identification
Physical Security
Security
Smart card
Swipe card

Proximity card - Wikipedia, the free encyclopedia
Proximity card (or Prox Card) is a generic name for contactless integrated circuit devices used for security access or payment systems. It can refer to the older 125 kHz devices ...

The Card Network Proximity Cards
KeyPAC Clamshell Proximity Card Part No/Manufacturer PIN: 20092 KeyPAC Clamshell Proximity Card Pack of 100 Price: £213.00 (Excluding: VAT at 17.5%)

The Card Network TDSI Proximity Cards and Tokens
TDSi Proximity Card Part No/Manufacturer PIN: 4262-0247 TDSi Proximity card with HICO unencoded magstripe Pack of 100 Price: £278.00 (Excluding:

HID Proximity cards from Databac
Check out the range of proximity ID cards from the Databac Group ... Home: About us: Products: Bureau: Solutions: Tech support: Press zone: Contact us

Proximity Card Reader - Ansador Security Systems
Proximity Card Reader from Ansador Security Systems and Solutions, London, UK. ... Proximity Card Readers are now becoming the norm within the access control industry. Proximity ...

Proximity Cards & Magstripe Cards - Advanced Cards From TCS
Proximity cards & magstripe cards are the advanced cards available at TCS. Proximity card and magstripe cards helps in controlling physical access in secure premises.

Proximity Card Readers - Security International
Please click here for articles on proximity card readers for automatic ticketing and access control

Proximity Card Printer - 00-12311100 - Ringdale USA
Fast, full-colour, high quality printing of proximity ID cards. ... Issue personal ID cards on the spot; Full colour, single-sided printing; Prints readable bar codes, ID photos ...

Electronic Card Access Control Systems > PAC Card Access Control ...
PAC Proximity Cards and Fobs from the UK's largest Security E-store. Supplying you with all your electronic keypad needs Locksonline the one stop security e-store

INSTRUCTION - PROXIMITY card pack
0AXTON!CCESS Initialising a new system WARNING: Do not deal with more than one user at the same time. The security and administration of your system will be seriously compromised ...