Why Do I Have to Do All the Thinking?

It really gets me that cops can turn off a stolen car remotely yet some rebels in Syria and Iraq can steal US tanks and other equipment and use them against folks we support.  Huh?  Is it that hard?  With all the money we spend you'd think our tanks might have locks and keys. 

I can't start my car without a little fod that I carry around.  My car cost $17,000.  What do you think a US tank costs?  I mean there is existing technology that will prevent a pistol or rifle from firing unless it recognizes the owner's finger. 

My son has a hi-tech keyfob that keeps hackers out of his online gaming account.  It cost five dollars.  Yup a whopping 500 pennys.

So here is my first solution to keep our tanks from being used by our enemies:

Just glue a Nissan Leaf on the tank and hook up the ignition.  Yeah it is silly but you get the point.

Then I thought of a simple solution of using a lojack. Yeah it would have to be military grade and all that and it would not be 100% but it could be made so much better than nothing.

How about a keypad on that tank that has to have a new string of numbers entered every so often?  Updating the tank's number would be easy for a tank under normal maintenance and even war.  Couple it with the mil-spec lojack and do that for every weapon and our stuff would quickly be useless for our enemies.

Do I have to think of everything?