There is an accessibility tool on the iPhone, where you tapping with your fingertips two or three times back can activate an action, in this case the action is a shortcut in the app shortcuts! This shortcut can simply copy the text you are writing and posted elsewhere or capture the image automatically and post the last captured image! That’s up to you... personally I don’t think it’s safe! You can accidentally activate and post something you didn’t want! It was just an idea!