Hello, we would like to implement a phone number validation on one of our contact form.

The ideal solution for us would be a using OTP system (like the one from Twilio). As per my understanding it will require an API.

According to TypeForm help support, there is no native solution 

We are looking for the best manner to implement this verification via API or any other way, does anyone  know any example of something similar done on a form ? Or have any advices ?

Thanks in advance