On popular crowd-funding platforms today are a couple of interesting smartphone add-on accessories. On Kickstarter, we have Pressy, which plugs into the phone’s 3.5mm audio jack and acts as an extra button. On Indiegogo, there’s Dimple, which is an adhesive strip that contains four buttons that work in conjunction with NFC. The key functionality in these accessories is the easy access to functions through button-press shortcuts. For instance, a series or combination of button presses could turn on your torch or launch the SMS app, and so forth. These accessories are taking quite some time to produce and get to market, however….