Reuters – The new Apple iPhone has something missing: the small socket millions of us have used for years to plug in headphones. While some fans opposed the widely anticipated move – one online petition urging Apple to keep the headphone jack drew more than 300,000 signatures – equipment suppliers and experts heralded a change in how users will interact with their devices. Axing the jack, they say, paves the way for discreet, bean-sized earbuds that can simultaneously translate, filter out unwanted noise or let us control other devices by voice – and drive up the value of the so-called'hearables' market to 16 billion within five years. It's the vision of the futuristic 2013 movie "Her", where a human has a love affair with a disembodied voice in his ear. But some who follow the industry say it's closer than many think, noting improvements in wireless technologies, materials, artificial intelligence and battery life.