Pressy review: The little 3.5mm plug that could

The surprisingly handy accessory opens up a new world of hardware actions

Many of us with Android devices have tasks we would like to accomplish without looking at our screens, but which may not have a dedicated or customizable hardware button (and some devices don't have any hardware buttons at all). Many of us also have headphone jacks on our devices we rarely (if ever) use, particularly given the vast number of Bluetooth audio solutions. If you're in both categories, Pressy, a new Android-only accessory originally funded through Kickstarter and now shipping (first to backers and pre-orders), may be exactly what you're looking for.

source: androidcentral