Ambient displays can play an important role in the teaching process guiding students to perform learning activities in public spaces. In the last years, automated feedback is becoming popular due to the proliferation of sensors, actuators, mobile devices, and networks. The contribution of this paper is twofold: (1) first, we present the implementation of an ambient display designed to provide feedback in learning scenarios using different actuators; (2) second, we present the results of a survey to investigate how adequate might be Bluetooth technology to sense and attract students to perform a learning activity.