I'm looking to identify the type of hardware device used to imitate a human touch on a smartphone screen. To be clear, I'm already aware of methods to interface with a smartphone device at the software level or using Android Debug to send touch inputs. What I want to do is rig up an electrode to send a hardware "touch" input to a smartphone, where I can just preposition it on the screen and let it sit, and then I can separately decide the trigger for the touch signal to activate.
I've seen these used before, as one example, to automate something like playing Flappy Bird on a smartphone, where the screen is being monitored with a camera attached, and it's just a single input point. Anyone know what they're called, or are these just homebrew hardware devices?
Edit to add: "Imitate a human touch" isn't necessarily required, I just need to be able to send a hardware input signal on a smartphone touch screen. I do want to avoid disassembling the device though. Ideally, this is something I could attach/detach repeatedly without a great deal of fuss.