By using your email. Some printers will print if you send them an email (look at HP's wireless printers), and you can also just send an email to yourself and print it off another machine. Either way.
I am a Bestbuy employee who volunteers on these boards on my own time. I am not paid for posting here, and you should understand that my opinions are exactly that - opinions. I do not represent Bestbuy in any way. : Open Mailbox