If the person using the hearing aids has a smartphone, has it beside where the hearing aids are pulled out of the charger every day, and updates it regularly it is then perhaps usefull. After grandma lost the hearing aids today we tried to use the Bluetooth finder feature as they are likely within 30 ft. As we had not used it in a while it wanted us to pair the hearing aids. If I had them I would but a couple of weeks since I last used this app and so it's absolutely useless to me.