https://www.cnet.com/news/your-next-smart-necklace-could-unlock-doors-and-shoot-perfume-computex/ > The biggest problem with jewellery is it looks pretty, but doesn't do anything. Diamonds might take literally 1 billion years to form, but what have they unlocked for me lately? > That's why we invented smart jewellery. But the biggest problem with smart jewellery is it's designed to be functional and understated -- there's nothing out there for the person who wants more jewels, more unnecessary features and more in-your-face opulence.