GitHub

Read and file issues, watch for updates, and grab the latest builds for iOS and Android.

iOS SDK Android SDK

Email Announcements

We announce all SDK releases over at the card-io-sdk-announce Google Group.

Join the Google Group

StackOverflow

Post your technical card.io questions to the card.io tag on StackOverflow.

StackOverflow

Twitter

Direct non-technical questions, requests, feedback, and photos of your cards pets to @cardio on Twitter.

Tweet to @cardio