Just a few minutes ago I answered an email from a reader named Chris who wanted a recommendation on how to have students create voice recordings that play back when a QR code is scanned. My recommendation was to try Vocaroo. Vocaroo lets you record for free (no registration required) then have a QR code automatically generated for your recording. In the following video I demonstrate how to record with Vocaroo then generate a QR code.

The only drawback to this method is that Vocaroo won’t host recordings indefinitely. See the following note from their FAQ page.