Does anyone have a clue?

Can anyone tell me how my car is able to start with two keys that dont have a passkey chip in them .

Can anyone tell me how my car is able to start with two keys that dont have a passkey chip in them .
What kind of car do you have and does it normally require a key with a chip ?

You don't give year and model.....

There are these systems....PassKey I, II, and III.....I and II use resistor chips.....III has a transponder built into the head of the key and has "PK3" or a circular symbol stamped on the shaft of the key.....the other system is PassLock....this uses a blank key....

Still, another system is the immobilizer system, which needs no key to start....

a car will start with out a chip in the key but will not stay running wth out the chip