Final answer:
Near Field Communication (NFC) is the technology used to send data between phones in close proximity to each other.
Step-by-step explanation:
The technology used to send data between phones that are in close proximity to each other is NFC (Near Field Communication). NFC is a wireless communication technology that allows devices to communicate and exchange data when they are in close proximity (within a few centimeters). It uses electromagnetic radio fields to enable contactless communication between devices, such as smartphones, tablets, and smartwatches.
NFC is commonly used for various applications, including mobile payments, file sharing, and device pairing. For example, you can use NFC to make contactless payments with your phone at a store by simply tapping it on a compatible payment terminal. It is also used for sharing files, such as photos or documents, between devices by bringing them close together.
Overall, NFC is a convenient and secure technology for sending data between phones that are in close proximity to each other.