If you're looking to pick up a new key fob, or repair one, you might wonder how long programming it takes and whether or not you can do it yourself.

The key fob is a notable chink in the modern car's less than optimal cybersecurity armor.

The same researchers who figured out how to clone a Tesla Model S key fob have done it again, cracking the replacement that was meant to fix the problem.

"The cost to replace the latest key fobs can be as much as $400 depending on the brand. Then add another $20 to $130 to program it to work with your car.