Mobile Payments Start-Ups Zong and Boku Go Head-to-Head on Facebook. Use Your Phone Number to Make Purchase Online. Boku Use your mobile phone number instead of your credit card to buy online. Online shopping once required a credit card. Boku makes it possible to make purchases online using a mobile phone number instead. Mobile Credit Card Reader Square Now Open for Business. Square, the new mobile payment venture from Twitter Co-founder Jack Dorsey, has officially opened its doors.
This means that anyone who downloads the the Square mobile app can now order a Square reader. Square tells us that it is also now shipping a slimmer, second-generation Square reader that is compatible with iPhone 4 and can capture a wider range of swipe speeds.Dorsey announced the news the same way he announced Square: with a tweet.