Slightly off track but about PIN numbers
Last year my girl friend had her bag snatched in Udon. Inside she had 4 cards 1 was hers,1 was her mothers, 1 was her brothers and the other was her brothers daughters.
After the snatch i chased the culprit through Udon and lost him.
Straight away I reported it to the police and bank to stop the cards,which were all bangkok bank.
23 minutes had gone by when we spoke to the bank and they said all 4 cards had been empted.
1 in 9 mins
1 in 13 mins
1 in 15 mins
1 in 18 mins
I said how can this be, how do they know the PIN numbers. I looked at my G/F and said dont tell me all the PINS are your birthday dates and the same number. She said yes

I said are you stupid or what and she replied everyone does the same.
Of course in her hand bag was also her I.D. with her date of birth
Just as a matter of interest I asked 10 thai ladys who came into our bar the next day, some married to falang some not and 8 out of the 10 said they use D.O.B. for their PINS
Just a word of warning dont expect that commen sense is always used, its not.