We have a host of Card Cam improvements coming out in the next release of Decked Builder Mac Edition:
1) As mentioned in a previous blog post, we have reduced and clearly highlighted the scan area to increase accuracy and speed
2) There's now a manual mode for scanning -- you can activate the scan by pressing the space bar
3) We added a threshold controller for automatic scanning. If you're getting too many false hits when your face is on the screen, just increase the threshold.
The release is currently waiting for Apple's approval.
- Tan Thor Jen