I was reading this book over the summer and I can't remember what the title is, and the actual book itself is on the other side of the continent while I'm home for winter break.

It was about this technology that had just been revealed similar to Google Glass, where it would correct your eyesight, wake you up whenever you wanted, provide infrared vision, all sorts of cool things. The military wanted to put it to use, but one of them, a captain or something, does some research into the inventor and discovers that he plans to use it to selectively kill all the people whose deaths his algorithm has predicted will cause the world to be free from corruption and problems. The system uses a grading rubric to determine these people's effect on other people's lives and gives them a good or bad rating.

There's also a scene with one of the military guy's partners finding a cave in a Middle Eastern country where this tech was being tested beforehand, and a whole village of people have just been executed and buried in a cave.

The military eventually tries to grab them to stop them from investigating the technology further, but they find a hacker who helps them change the system so that everyone gets graded as good, making it so that no one dies when the kill switch is set off. I also remember this book being part of a series of books, which is why I'm looking for it. Trying to remember the author so I can get some of the other books from the library while I'm back home. Any help is appreciated!