How do I detect a mobile device or a touch device?

I want to set it out like this;

if IsUsingMobileDevice == true then
--Set a boolean value to true
elseif IsUsingMobileDevice == false then
--Set a boolean value to false
end

All feedback is appreciated, Thanks! -Oaktin

I have found the answer or at least an alternative answer. Here is the code I will use;

if game:GetService("UserInputService").TouchEnabled == true then
    --Sets boolean value to true
elseif game:GetService("UserInputService").TouchEnabled == false then
    --Sets boolean value to false
end