Back in October, word began to spread that Samsung was looking at integrating some type of authenticity recognition chip into all official accessories. Without this chip some advanced functions such as wireless charging, sleep/wake functions may not work on third-party accessories.
The chip is seen as one way for Samsung to exert some control over the accessory market in much the same way Apple does with their chipped power cords.
It doesn’t seem as if all is lost though. If you have rooted your Note 3, there is a workaround to allow the 3rd parties cases, covers, and chargers to work.Your Note 3 will need to be running Xposed Framework; head here for the more info and the fix.