Apple unveils iPhone X home button add-on with Touch ID and headphone jack
Measuring in at 29 mm × 30 mm × 3.9 mm (1.1 in × 1.18 in × 0.1 in), the home button add-on for the iPhone X is about the size of a 4th gen iPod Shuffle (remember those?). However, unlike the Shuffle, it’s not built from aluminum, but the glossy, white plastic that Apple uses in all its power cables and accessories. The only exception is the button itself, which is covered in glass.
The iPhone X home button add-on plugs into the Lightning port of your iPhone X, but fret not, as it has a Lightning port of its own and a 3.5mm headphone jack to boot!
The iPhone X home button add-on is the size of an iPod Shuffle!
So, if you’re tired of Face ID, you can simply go back to the good ol’ days of unlocking your iPhone with your thumb. And not only that, but you can also go back to the good ol’ days of listening to music from your good ol’ wired headphones while charging your iPhone the good ol’ wired way! Ain’t cables just great?
Other than that, the iPhone X home button add-on works exactly like physical home buttons of yore. That is, you can hold the button to bring up Siri, double tap it to bring up your recent apps, or press it once to go to the home screen. Support for the home button add-on has been introduced in iOS 11.3.
source: Apple
Things that are NOT allowed: