ISO/IEC 7810 Identification cards — Physical characteristics is an international standard that defines the physical characteristics for identification cards.

The characteristics specified include:

  • Physical dimensions
  • Resistance to bending, chemicals, temperature, and humidity
  • Toxicity

The standard includes test methods for resistance to heat.

CR-80 ISO 7810 7816 Smart Card Dimensions (ID-1)



CR-80 represents the most common ID card size. CR80 ID cards are more commonly known as credit card-sized ID