> For the complete documentation index, see [llms.txt](https://ftc-code.gitbook.io/tech-toolbox/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ftc-code.gitbook.io/tech-toolbox/sensors/touch-sensor.md).

# Touch Sensor

Touch sensors in FTC robotics are often used to check when an object has come into contact with the robot. It contains a button which when pressed, returns a value to the codebase.