US-based developer invisaWear has developed smart jewellery which alerts friends and police in case of an emergency. invisaWear is a smart and stylish wearable that instantly sends your location to emergency dispatchers and loved ones during an emergency.
For all the other moments, they provide you with peace of mind knowing that help is only a touch of a button away. Priced at $129, the device shares user location which is fed into its companion app. Its battery life is designed to last one year and also features Bluetooth connectivity up to 30 feet away from the user's smartphone.