I am build a custom app mobile that show all catalogs from my store but have a problem.
The problem is that, not can register a new customers or do login with registered clients from your API
Is posible register and do login from my customs apps?
You can create new customers using the customers admin REST API: https://help.shopify.com/en/api/reference/customers/customer
Or you can use the storefront API: https://help.shopify.com/en/api/custom-storefronts/storefront-api/reference/mutation/customercreate.
Logging in however cannot be done with any APIs besides multipass, which is for Plus shops only.
Does the above not suit your needs? Take a look at the documentation if you haven't already and let me know if there's still something the above does not address.
Thank you for providing this information.
We need to be able to connect our login with the current store from the application.
What tools or partners can we use to do this?
If you're creating a mobile app, have you looked at either of the mobile buy SDKs for Android and iOS? They both support customer logging in via the customerAccessTokenCreate mutation (which is available with the storefront API if you don't want to use the SDKs):
I hope that helps you out a bit.