Telephone Number Verification. Send us a telephone number and we'll call that number and give whomever answers a randomly generated 4 digit PIN. Then they must enter the correct PIN in your application. Telephone Number Verification validates that they provided your application with a real, working number which they have access to. It’s great for making sure that people are entering their real phone number on your website, for avoiding fraud and for insuring that the data getting into your customer records is accurate.

Credits: 2 per number