Noob to posting here and KM in general. I searched and didn't see this mentioned...
I've recently been using the Touch Portal app to create "buttons" on my iPad, which then trigger basic things such as opening a new window in Safari, opening to Google, opening to finder etc on my Mac. Tonight it dawned on me that I could use Touch Portal to trigger hot keys or string triggers in KM. Works great.
My Macbook Pro is usually docked, and by using an iPad Mini in front of my keyboard with Touch Portal, its basically like a big, macro launching Touch Bar. I have Cerebral Palsy, and my fine motor skills are lacking a bit. I find this much easier than trying to trigger hot keys or string triggers, and I don't always like having palettes open on the desktop.
I especially like the ability to customize the icons of the "buttons" with any image of your choice. The free version only allows for one page (think palette) of "buttons", and the paid version allows for creation of unlimited pages that you can name and customize to your liking.
Included a screenshot of example buttons I created with Touch Portal on iPad Mini, a shot of the setup in front of keyboard/monitor, and a gif of me tapping the button I setup to launch a new window in Safari as an example. Triggers are instantaneous. No affiliation with the app at all, just adding a suggestion I hadn't seen mentioned. Touch Portal for Mac can be found via Google, and the companion app is found in the App Store. Both your Mac and phone/tablet must be connected to the same network. Interested to know if anyone else uses this or tries it out!