[rjv]

I'd prefer a keyless system over the "key with anti-theft chip" alternative. I just had to replace one of these keys for my car and it was over $300 USD. That much for just a KEY that needs to be "programmed." Such a scam by the manufacturer...

[mikestew]

$226 USD for a new keyless entry fob for a Nissan Leaf (selected because it's what I own): http://www.nissanofelkgrove.com/versa-intelligent-key.htm

Or am I misunderstanding what you mean by "keyless"? Something has to authenticate the "keyless" part.

[Istof]

I programmed myself a cheap keyfob purchased on ebay for my honda (no special hardware needed, just the car itself)