A button box beats you smartphone in many scenarios. You don't need to search for it; you don't need to unlock it; you don't need to go to the right app; there's no launching the app and waiting for it to load. Far less steps if you have a tangible item just in front of you.
Here's what you will need to build one:
Knowing where you'll use it, is important because the button box design will depend on this.
We've automated the follow:
You can of course make your own automation stories :)
OBS! Micro robot shown in the video is a prototype and currently cannot be acquired. But it will be soon! Stay tuned.