But did you look at the program code of it? Did you figure out that 8675309 opens it even if you didn't program it? That's what I have worried about on these kinds of devices.
While there is always a chance a backdoor like that exists, and thieves start memorizing default and backdoor codes and also learn how to recognize the corresponding models by sight from a non-suspicious distance... there's an orders-of-magnitde greater chance they use a low skill rock-through-window style attack.
