Smart cards are also known as chip cards, integrated circuit cards, and microprocessor cards. These types of cards are embedded with a microchip containing vital information and an operating system. They are used in various fields such as banking, healthcare, transportation, and telecommunications. These cards provide secure access to resources and can store sensitive data such as personal identification numbers, medical records, and financial information. Smart cards can also be called contact cards since they can only be used after physical contact with the reader. Another synonym for smart cards is proximity cards, which do not require physical contact and only need to be within the proximity of the reader.