The team created a device that uses radar to eavesdrop on underwater acoustic ... The researchers said their intention is not only to alert people to the vulnerability of underwater transmissions ...

One particularly useful feature is Live Listen, which turns your iPhone into a remote microphone that sends sound to your AirPods ... so Live Listen is only compatible with AirPods and Beats ...

Eavesdrop, a new app for the iPhone released a few days ago, aims at taking the whole “local music sharing with your friends” concept a step further by enabling you to broadcast your iPod.app library ...