Those of you who own a fairly new MacBook have probably had a chance to play around with its Touch Bar. It’s not everyone’s favorite feature, but it could prove more useful on iOS devices. AccessoryTouchBar on GitHub demonstrates how such a feature would work. The iOS Touch Bar would adapt to different tasks to enhance your writing speed.
You can use such a feature to enter domain names, change sound level or brightness, or type numbers without losing the alphabets. Eyad Murshid has shared info about this concept on GitHub.