I'm not sure if this belongs in financial, inferno, comms so I'll just put it here because when I saw it I was reminded of the secmon's Bluetooth post.
If they chip your food, house, car work place, clothes. roads, glasses, hearing aids, heart pacemaker, appliances, electric system, phone, computer,etc, why would they need to chip you? Wait they already have the capability to do so and are just waiting for the legacy equipped things to be outlawed or replaced.
If your credit card can be hacked by some one merely walking down the street with a reading device ,what makes any one think that the chip in their body is invulnerable to the same hacking?
That depends on the extent to what the chip is used for. At the moment their use is pretty limited. These rfid chips have been used to unlock electronic door locks, they could be used to replace your keyless vehicle key, there isn't any reason why it couldn't unlock your cell phone, it can replace some or all of your credit cards so yeah it's a pretty good hackers target.