Final answer:
To enable communication between his GPS and smartphone, Joe should use Bluetooth pairing. This wireless technology allows devices to connect over short distances without wires.
Step-by-step explanation:
If Joe wants to enable communication between his GPS and his smartphone, the technology that would most commonly be used for such a purpose is Bluetooth pairing. This wireless technology allows various devices to connect and communicate over short distances without the need for wires or direct line of sight.
Bluetooth operates in the 2.4-GHz range and is well-suited for connecting devices such as headphones, smartphones, and GPS units to enable a variety of functions, including hands-free calling and data sharing.
Other options like a data link cable, a wireless access point, or infrared communication can also facilitate device communication, but they are either less common for this use case (data link cable, infrared communication) or serve a different purpose (wireless access point is typically for internet connectivity).