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Vocal Recall uses QR codes to store a link to your audio feedback in a fully end to end encrypted manner. The codes can then be attached via sticky labels directly to a student’s work and the student can retrieve the feedback using an QR reader. This process saves time, is easily evidenced, allows for greater depth of feedback and engages students with a personal touch. In all trials students have much preferred this form of feedback stating that it is easier to understand and learn from their mistakes in a way that a short, written comment cannot achieve.
Via Nik Peachey
A great free app for delivering audio through QR codes.