The FCC voted unanimously on Thursday to open little-used airwaves, which, until recent advances in technology, had limited uses. The network that will flow over these frequencies is known as 5G, and it will succeed the 4G networks that currently carry movies and music to mobile devices. The top four U.S. mobile carriers have already announced plans to test the technology. 5G will enable massive machine-to-machine communications encompassing “everything from smart homes to real-time cargo tracking to enhanced environmental monitoring and myriad applications yet to be conceived,” said former FCC chairman Reed Hundt. While exact rollout dates are unknown, many believe 5G will be available to consumers by 2020.