How to use authentication_sms module


I want to start using the two-step authentication and would like to know all I need to use the authentication_sms module.

I assume that some other tool is required to specifically send the sms, but I do not know exactly what is that requirement.

Could someone give me an advice?

Thanks in advanced,

You’re correct. authentication_sms is only to standardize the backend fields.
You need to use another tool like Twilio to send.

Thanks Adriá,

Does someone know a free alternative to Twilio?