Square Up and Pay Up

Oh yeah, it's hip to be square again.  Square is a company started by one of the co-founders of Twitter.  Attach a small device to your mobile phone and swipe a credit card to receive payment for services anywhere. This is a great device for those who make house calls, when hosting a table in public, or to get donations while out (listen up nonprofits).  In fact, if you sign up, you get a free card reader in the mail. The only fee? A 2.75% processing fee.  I like that they try to check a person's identity before allowing the person to receive payments, they text an app download reminder to begin use.