There are good reasons why credit cards are all the same size. First, it ensures compatibility with different payment technologies. Standardization prevents the hassle of dealing with cards of different sizes.
This standardization is worldwide, guided by the International Organization for Standardization (ISO). It allows people to use their cards while traveling without size concerns.
A standard size also makes card production easier and cheaper. Manufacturers benefit from efficiency and increased production.
A uniform size improves the user experience by making the cards easy to handle and use in various machines and wallets.
The cards are designed to fit comfortably in standard wallets and pockets. They are not bulky or inconvenient.
Historically, the dimensions of the first credit cards in the 1950s set the standard for compatibility and consistency.
Although there is talk of using new technologies like microchips or biometric sensors, which may require some size adjustments, maintaining a standardized size is important for global compatibility and efficient payment processing.
Source: https://www.accountiod.com/credit-card-size/
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