My dad had an early 1990s Renault Espace that used an IR remote opener with fixed codes. I know this because my best friend had one of those cool Casio program

My dad had an early 1990s Renault Espace that used an IR remote opener with fixed codes. I know this because my best friend had one of those cool Casio programmable IR watches and we cloned the opening code from the Espace key fob, and the watch was able to reliably open the car years later… even after it had been sold to a neighbor, who, yes, woke up to find all his car doors wide open one morning after we were old enough to drink alcohol but also old enough to know better.