Answer:
Near field communication (NFC)
Step-by-step explanation:
Near field communication (NFC) can be defined as a short-range high radio-frequency identification (RFID) wireless communication technology that is used for the exchange of data in a simple and secure form, especially for electronic devices within a distance of about 10 centimeters.
Also, Near field communication (NFC) can be used independently or in conjunction with other wireless communication technology such as Bluetooth.
Some of the areas in which Near field communication (NFC) is used are confirmation of tickets at a concert, payment of fares for public transport systems, check-in and check-out in hotels, viewing a map, etc.
Assuming you have a contactless magnetic stripe and chip reader by Square. Thus, the type of wireless transmission that this device use to receive encrypted data is near field communication (NFC).