TX517 Apple didn't invent the smart phone, they didn't even invent the first capacitative touchscreen phone! It was several months behind at least two known other phones.
Likewise, if you did any research, which clearly you don't, you would know there are multiple phones on the market, and have been for months, that have in-screen fingerprint sensors. There are at least 5 I know of, and more are on the way. The OnePlus 6T (which will be carried by T-Mobile) is supposed to have it also. The difference is the tech that Samsung uses is more advanced than the others on the market right now.