QR.io is a complete SCAM. It makes you think it's free, they strategically wait to allow you to set up the QR code (in my case on printed marketing material/banners), and then they email you that unless you pay a $45/mo fee that your "free" QR code will no longer work. Biggest kicker: they lock you out of your portal after providing your credit card, so you can't cancel your credit card info. I've been trying for 3 mos to stop it.
