Those of us who are NOT into having a cell phone attached to our body at all times--it is becoming more difficult to make things work for us.
I had to get a cell phone to text my family and stay in touch if I have an emergency.
Do you have a cell phone to take a picture of the funny square that is on your computer screen? Then take the phone to UPS and show them the photo. That worked for me, and I no longer have to print anything.