Having always a +1 for a duress code seems like a bad idea. What if a criminal asks for your code and types in the code you gave -1? If it works he now knows yo

Having always a +1 for a duress code seems like a bad idea. What if a criminal asks for your code and types in the code you gave -1? If it works he now knows you tried to to set him up. If it does not, he can still try the PIN you gave him.