How to start a 'callback'?

Question

JavaScript

Hi. I decided to write a service on nodejs for practice, a callback to the site, you write a phone number, after the site owner receives a message to re-sign to such and such a number. I have experience with node. Where to start, where to dig? Should I notify the owner through the application or negotiate with the operators?

Answer 1

There are services that sell sms packages. Associate the api of the service with your program.
If you make an application, then your application should be able to do push notifications.

Answer 2

https://github.com/argon/node-apn
www.gianlucaguarini.com/blog/nodejs-and-a-simple-p...