"Безконтактні" (or "contactless") refers to technologies that allow transactions or interactions without physical contact. This is commonly seen in payment systems, where users can make purchases by simply tapping their card or smartphone near a reader. This method enhances convenience and speeds up the checkout process. In addition to payments, безконтактні technologies are also used in access control systems, such as key cards for buildings or public transport. These systems improve security and efficiency, as users can gain entry without needing to swipe or insert a card, reducing wear and tear on devices.