Proxy Passport

Me and my friend were seriously discussing about my duplicate driving license which seem like a orginal one. How anyone can able to trace its a proxy ? he asked, One easy way is hologram fastened in the orginal, I said. Conversation then diverted towards making the same with the passport, since its most valueable then any other documents we have. So I googled whether we can make duplicate copy of passport Found this See the last lines (According to the US Passport Agency, it is perfectly legal for you to make a color copy of your passport -- although Kinko's can't -- and in fact they recommend you do so.) really makes sense right ?