I have a hard time remembering my PIN number, and I’m worried some crook will find it wherever I hide it. But I never thought to hide it in another inconspicuous number. Let’s say your pin number is 1212. Try creating a fake phone number with those as the last four digits, like 508-1212, and write it somewhere it wouldn’t look out of place, like your contacts in your phone, or a travel calendar. Only you will know where your pin is, and anybody else searching for it will find a phone number.