PVC smart cards are durable and customizable plastic cards made from polyvinyl chloride, often integrated with embedded technology such as magnetic strips and RFID. Different types include ultra high frequency (UHF) cards for long-range applications, high frequency (HF) cards for reliable data transmission, and near field communication (NFC) cards for secure close-proximity interactions. They are widely used in various applications like identification, access control, transportation, and mobile payments.