For those old folks like me.  I remember when you couldn't program them.  They came from the factory programmed and if your neighbor had the same (happened to us) it has to go back and be reprogrammed.  LOL.

Things are supposed to be simpler, or are they???  LOL. This is an example of one of the old ones we had.  Every once in a while I put it in the car and it makes me smile.  My friend Penny and I used to take ours and hers and ride around the neighborhood at night on our bikes to see if we could open any doors.  Oh those memories!!

I'll go one better about the older garage door openers....  We moved into a house that had a late-50s model - it was still in good condition but we lived on a flight path to the Montreal International airport in Dorval.  There were a good number of times when a plane triggered that danged door.    We replaced that with a late-70s Sears Craftsman, a TOL at the time, and I remember the transmitter boxes and the receiver on the motor unit had a bank of switches that allowed you to "program" a custom code for your door.  This was billed as a big safety feature to prevent random openings (and believe it or not, there were a few folks who got robbed because someone was able to open the garage door!)