Not to be dismissed as a simple gadget, the Opn from Denmark’s Oticon actually sounds useful. The Opn, which can be used with IFTTT (If This Then That) recipe-based automation, ensures the wearer knows when someone rings the doorbell, the smoke detector goes off or a baby monitor is alarming.
In the case of Opn, IFTTT provides the means for an Internet-connected doorbell to trigger an automated audio message to the person wearing the hearing aid, saying something to the effect of “There’s someone at the door”