system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come some materials like orange peels can work on my touchscreen phone but others won't?

I dropped an orange on my phone and it sent an email.
gpt
The touchscreen of your phone is most likely a capacitive one, which creates an electric field in the screen. Your body is electrically conductive, so it distorts that field when a part if it is very close to or especially when it is touching the screen, which is what the screen measures to sense the position of your finger. So, anything with an electrical conductivity at least comparable to that of your body will also work with the touchscreen. This includes most plant matter and meat, since they, like the human body, contain a large amount of water.