Braintree and credit card payment from mobile app

Question

I am working on an app that requires payment to be collected from customers. I have few questions related to braintree integration with my app. I am actually struggling a bit with the workings of the braintree so thought of checking here.

1. The PCI compliance is critical so i do not want to store anything in my app or the backend server. Can I achieve this with braintree? I also don’t want customer to retype the credit card information when they come back to the app. As I understand there is a Vault functionality which can do this but I was not sure.

2. Do I invoke the braintree API from iOS app directly or do I need to first send the credit card information to my backend layer and then invoke the Braintree APIs from backend. I don’t want to transmit anything to my server due to the PCI compliance so I am hoping that I can just invoke the braintree API directly from the iOS APP and when user comes back, again invoke the braintree Vault API from the APP and pull the previously used credit card.

3. appreciate if anyone can pls. direct me to some kind of architecture / white paper/best practice on this. I went thru the APIs document on braintree site which provides and good API documents but i could not find the high level architecture document on this.

Thanks in advance..

Answer 1

1. Yes. https://articles.braintreepayments.com/control-panel/vault/overview
2. Yes use from iOS. https://developers.braintreepayments.com/ios+ruby/start/hello-client

for number three... I'm not sure where to find that. Definitely ask support