Nexmo Verify has a unique charging model :
- You pay a fixed fee for successful verifications (i.e. the PIN code you gave us matches the one returned by the end user) but not for unsuccessful attempts
- You pay for the traffic underlying every Verify transaction (SMS and text-to-speech calls)
Here are a few simple guidelines that you can use to minimise costs:
- Ensure your application clearly explains to users that a verification will take place e.g. require their consent for it to start by placing a button.
- Once the user has acknowledged they want to start the verification, immediately display a screen where they can enter the PIN code