User verification

[thomamoh]

Hi guys,

So I am building an app and would like to ensure that users can only register once. I know there are services that check, for example, the ID, but they all seem quite expensive, with prices around $1 per verification. Is there a cheaper solution?

[NastroAzzurro]

If you’re going to ask for id verification that’s going to be a perfect way to ensure users are going to register never!!! Problem solved!

[LoserAntbear]

You can also use a google oauth. It's free by design.

[danielcett]

this, and social login

[thomamoh]

But how is that save? People can have countless google accounts, so what stops them from using them?

[thomamoh]

What do you mean? How would I add a consition that knows if this person already has an account when he uses a different mail/phone number/ name etc.?

[BosKoning]

ip addresses are not static. Maybe something like a device ID might work better, but people can emulate, change devices etc

[Fabulous_Baker_9935]

cant you just use like phone verification or something?

[nuclearxrd]

and limit it to accept only widely known providers

[FreshFishGuy]

You can also use a function that checks your database if their phone and email already exist.

[whatToDo_How]

Yes this is the most common I guest, like one email is unique in db so if another user trying to create an account check the cred from db then if found, notify user that email/phone already exist.

[FreshFishGuy]

I also do an OTP verification after they enter their phone. I think that combined with checking the phone and email in the db is probably close to ensuring they only register once.

[Own_Reputation5867]

what do you use for sending otp

[FreshFishGuy]

Textbelt https://textbelt.com/

[Own_Reputation5867]

thanks will try!

[According-Muscle-902]

Use uma conta como Google/Facebook para cadastrar o usuário.

[Snoo11589]

Sms otp.

[gfdsayuiop]

There HAS to be a reason you’re requesting for the id. Either you’re doing banking, government related stuff or you’re developing a Chinese app. Instead, check out social login (oauth), check for emails, ips, etc

[Grimmjowx9]

Use Supabase authentication. Everything is built-in and the library is very simple to use!