> For the complete documentation index, see [llms.txt](https://blair-neal.gitbook.io/survey-of-alternative-displays/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blair-neal.gitbook.io/survey-of-alternative-displays/appendix/notes-about-touch-screens.md).

# Notes about Touch Screens

Since touchscreen technology is adjacent to specialized displays, I figured it would be good to have a brief section here that covered a few different touch screen technologies.

Types:

* PCAP/Projected Capacitance
* Infrared
* Resistive
* Surface Acoustic Waves
* Surface Capacitive
* LIDAR
* Object/Marker recognition on screens