Chips ahoy

I'm bemused this evening with the idea of people having chips implanted to use at their work place.  According to the news report I saw, employees at one particular company now have chips implanted, in their hand I think, that allows them to access certain computer programs, access some areas in the plant and even pay for lunch in  the cafeteria. At first glance I think this is a great idea.  I'm imagening being able to use a chip imbedded in my hand to buy groceries and other goods, start my car, access any on line accounts without ever having to remember a password.  Weve been imbedding tiny little chips in pets for years, making it possible to ID runaway animals. Of course I'm aware that many people will object to the idea of being chipped if that meant that they could be tracked down at any time although I can see that sometimes it might be helpful, for instance in the dase of Alzheimers sufferers and others who might be likely to wander away.  The more I think about this the more I can see arguments pro and con.  Ah well, it should be interesting to see how/if this idea becomes popular.