Your doubt tells us that your PIN is not a palindrome. The second most common PIN is 1-1-1-1, followed by 0-0-0-0 (says http://www.datagenetics.com/blog/september32012/ ), and looking at the top 20 numbers, over 10% of the people have a palindromic PIN. (If selected randomly, that should be 2%.)

So either the police get called a lot, or there's some special flag that say "palindrome PIN - false alarm" (and it must be supported for international cards) ... or it's simply not true.