If the ICO is promising and you believe and know that they will succeed, why not? You don't need to be afraid that someone will have your personal ID, and what?? If we go online these days, we can find your personal data and you won't even know. Your Facebook is more risky then this, because there you share information about you every single day, and everyone knows, where are you, with whom, why, what do you eat, where do you sleep, with whom and etc... It is funny if you are afraid from KYC.