Freakish

I lost my memory. Is it selective memory or was I pre-occupied with something? What happened??

I was in the shop, making a purchase. I was asked to pay by NETS, the next moment, I got an approval NETS receipt but I don't remember keying in my pin. I swear I still can't recall. It almost freaked me out that the transaction went through without my authorization. Or is it that, I really lost my memory?

It is a sign that I am getting old...