Team Phottandence presented a smartphone app called Phottendance that uses facial recognition to take attendance for classes in seconds by having the faculty take a photo of the entire class. The app recognizes faces in the photo and marks attendance in the cloud backend without collecting biometric data. Phottendance has cost advantages over hardware-based attendance trackers as it only requires a smartphone. However, students may dislike that proxies are not possible with the facial recognition system.