These days , keyless entry generally involves a wireless remote either built into the key ( my Honda ) or as a separate key fob ( my mom 's Camry ) . At some point , Mercury added that feature to the Grand Marquis , but in 1992 it involved a five - button keypad on the door . ( Newer ones still have the keypad , in addition to the remote . ) This means that I can leave the keys in the ignition when I go to the grocery store , thus eliminating that unsightly bunch - of - keys bulge in my pocket .

Question: How might keyless entry be helpful for me ?
Answer: Keyless entry might not be useful since I do n't have to carry the keys in my pocket .Keyless entry might be useful since I have to carry the keys when I get locked out .Keyless entry might be useful since I have to carry the keys in my pocket .None of the above choices .