[nopardons]

A key is a key is a key is a key...no matter what it is made out of, nor how it is shaped. Keys are used to open and lock things. They have been made out of iron, brass, and yes, even gold, silver, and platinum. The car "keys" are electronic, so are the the cards that open hotel rooms.

Though few people have them now, new "smart houses", supposedly allow one to not only turn on heat, air conditioning, lights, and yes, even unlock doors, prior to the owner reaching the house. I have no idea if this really works/works well, or not. But the opener is still a KEY!

[TexasGator]

“A key is a key is a key is a key...no matter what it is made out of, nor how it is shaped.”

The author defined a ‘key’. A keyfob does NOT fit his definition.

[TexasGator]

” But the opener is still a KEY! “

NO. It is a switch!

[TexasGator]

key1 /kē/ noun noun: key; plural noun: keys 1. a small piece of shaped metal with incisions cut to fit the wards of a particular lock, and that is inserted into a lock and turned to open or close it.

[TexasGator]

"A key is a key is a key is a key...no matter what it is made out of, nor how it is shaped. Keys are used to open and lock things."

A 'key' by your definition ...