Meet the Unlock: a stylish short range Bluetooth ring that lets you unlock your smartphone or tablet safely and conveniently. It does not have some of the problems that regular Bluetooth and NFC rings pose. Unlock is compatible with Windows and Android devices. It will be available in white and black.
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Unlock by Fournira Optime
This Bluetooth 4.2 Smart Ring has a battery life of over a year. It is made with flexible materials. You can find out more about it on Indiegogo.
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