I tried to get some money from an automatic teller machine Saturday but I got a message that I had entered an incorrect pin. Odd - I have had the same pin number for decades. I didn't know the machine had that message in its repertoire. I tried twice more and got the same result. The bank was closed but it was open this morning. On the way over to get some help, I thought it might be interesting to try the machine again.
It worked on the first try. Good but odd. I took the time to go inside and explain to a teller what had happened. He said,"Weird. We will keep an eye on it."