Symptoms

The Salesforce login window appears when attempting to scan a new business card to Business Card Reader for iOS: 

Cause

This may happen because saving contacts to Salesforce was selected in the app's settings.

Solution

In order to resolve the issue, please do the following:

1. Launch BCR.
2. Go to Settings > Saving.
3. Select Cardholder and Contacts (or another convenient option, that does not include Salesforce).
4. Save the changes and try to scan the card again.