Jesus said that time is short.  The technology that will eventually lead to the mark is already being developed.  The crisis that will precipitate its implementation is approaching.  It won't come as an obvious evil, but rather as a solution to problems, a path to a better life, but no convenience is worth losing your connection to God and an eternal destiny in Heaven with Him.

I Died & What Jesus Revealed About the Mark of The Beast

Will Shock You: 

https://www.youtube.com/watch?v=D9ZRimhc3Aw