Not sure why there are one star reviews...these people must have an IQ below 85, and clearly not smart enough to use a very user friendly application, but I personally LOVE SUDO! I finally feel secure in my online shopping! I currently have three separate personas for three different types of use, and personally use this service mostly for online shopping. I have changed my log-ins to my new SUDO email, along with my new SUDO assigned phone number. I also created a persona for email info sign ups (for blogs and emails from realtors). This is such an amazing service, and Im so glad I am safe to shop and give out an email / phone number without my actual credit card and contact info being shared to the universe for anyone to steal. If I were single, I would most definitely use SUDO for online dating as well. Its pretty cool how you can set up a persona, with a completely different location of your choice too. The more I learn about SUDO, the more excited I am about the service and privacy it affords individuals. Check it out, you will not be dissapointed! This is the new and ONLY way to keep your personal information secure. So much more than what banks are offering with their cards as well.