A card enclosure is a container for smart card

Smart card

A smart card, chip card, or integrated circuit card , is any pocket-sized card with embedded integrated circuits. A smart card or microprocessor cards contain volatile memory and microprocessor components. The card is made of plastic, generally polyvinyl chloride, but sometimes acrylonitrile...

s, credit card

Credit card

A credit card is a small plastic card issued to users as a system of payment. It allows its holder to buy goods and services based on the holder's promise to pay for these goods and services...

s, debit card

Debit card

A debit card is a plastic card that provides the cardholder electronic access to his or her bank account/s at a financial institution...

s, telephone card

Telephone card

A telephone card, calling card or phone card for short, is a small plastic card, sized and shaped like a credit card, used to pay for telephone services. It is not necessary to have the physical card except with a stored-value system; knowledge of the access telephone number to dial and the PIN is...

s, visiting card

Visiting card

A visiting card, also known as a calling card, is a small paper card with one's name printed on it. They first appeared in China in the 15th century, and in Europe in the 17th century...

s, business card

Business card

Business cards are cards bearing business information about a company or individual. They are shared during formal introductions as a convenience and a memory aid. A business card typically includes the giver's name, company affiliation and contact information such as street addresses, telephone...

s and other cards of similar size. Most cards have dimensions that follow the ID-1 format of the ISO/IEC 7810 standard which specify the physical dimensions for cards to be 85.60 × 53.98 mm. The enclosures can be made of metal, leather, or plastic and come in various colors and designs. Sometimes having a laser engraved

Laser engraving

Laser engraving, or laser marking, is the practice of using lasers to engrave or mark an object. The technique does not involve the use of inks, nor does it involve tool bits which contact the engraving surface and wear out...

 design for aesthetic purposes.

There are shaped CD

Shaped CD

A shaped CD is a non-circular compact disc. Examples include business card CDs, CDs in the shape of a star, a map of a country, and more. These disks are usually made for marketing purposes and are properly read by most CD-ROM drives...

s that are business card sized that also fit.

If made of aluminium

Aluminium

Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances....

, it may provide RFID shielding for proximity card

Proximity card

Proximity card is a generic name for contactless integrated circuit devices used for security access or payment systems. The standard 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...

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