Code Cracker is blank

Thank you. I expect the four characters are what did it, as you say.
The warnings are a bit of a nuisance when they keep appearing, but I'll
ignore them.

I don't believe in using credit cards, but it's the only way with some
payments on the computer. I don't like having to pay $24 a year just to have
the card for about four purchases a year, but as the bank pays it off and I
never pay any interest I suppose I'm on a winner.

Geopelia

 

Anyone wanting to see my credit card number in the rubbish would have had to
go through full supermarket bags of advertising leaflets to find it. (Does
anybody read all that junk?)
But now the number isn't shown on the bank statement, so they would be out
of luck anyway.

 

Of course. I get a couple of bags full every week. And somebody uses the
newspapers.

I answer what people ask me.