For the first time I was wrong again. The first charge happened on the day that I gassed up my global warming contributing motor vehicle (another point in favor of electric cars), so it must have been the reader at the petrol station that caught the number.
But here is a question, is the supersecret three digit number on the back of the card that you always need to make online purchases encoded electronically in it? If so, that’s dumb!
Could have been a card reader, could have been Windows. The following is very easy to install and use.
http://www.ubuntu.com/download
The following is more secure for anyone who knows how to use it (little advance study there).