Knoctify is an inclusive notification device that was co-designed together with the deaf community in Singapore. It helps those with hearing loss to be more aware of sound events around them by using sensors to capture these events, and translating them to visual and haptic feedback on devices deployed throughout the house to attract their attention. Knoctify consist of a sensor and receiver pair. The sensor device has a button and vibration sensor that is attached on the door.  It detects if someone is pressing on the button or knocking on the door. This wirelessly triggers a receiver device that plays a sound, flashes brightly and/or vibrates to capture the attention of a person with hearing loss.

Today, Knoctify is commercially available for sale to many countries around the world. For more information, visit


People involved in the project