South American locks and keys

Just got back from 2 months in South America.
As an escapist, I was struck with some of the unusual keys and locks I encountered
Unfortunately, in every case I forgot to take pictures before we checked out.

In Argentina, several of the locks worked as follows:
- the keyhole was horizontal rather than vertical
- the key would would only work one side up
- in one hotel, the key/lock was a broad "^" shape (upside down V)

In Brazil, we encountered the following
- the keyhole on one side was horizontal (-)
- the keyhole on the other side was vertical (|)
- the key was an "X" shape that would only fit in one side up; each of the 4 blades had different notches
-when you inserted the key in the lock, the 2 panels that formed the slits moved aside

Also in Brazil,  an electronic key and lock
- the key hole was a slot in the top of the doorknob
- the key was a card shaped like a square with  a rounded end (slightly larger than a regular key, smaller than a key card
- the key fit rounded side down into the handle -- you had to hold it in while twisting the handle to open the door