One ring - One world. by nostro from ukraine

Today it is quite easy to create products of the future. Common practice is to simplify an existing product by making it more user-friendly. I believe that in future a person will be carrying just 3 devices in everyday life: smart lenses/glasses, mobile phone, and the ring.
I came up with the idea of wearable technology, a ring that will fulfil all needs of banks' clients: online/mobile banking secure log-on and operations. The secure second-factor authentication device which is always on the clients' hand.
NFC ring model saves time: tap and touch to login, send money, make digital signature. No installation needed. Ring can be personalized - a bank just sends a chip that client will plug in his own 3d printed model. The Bank gets free 'word of mouth' advertisement, cuts production costs. Any market followers would not become a competitor, because adoption of the idea will provide the client with full freedom with a possibility to use 'The ring' in many places.
New u2f protocol makes it Real and possible to use One ring not only in Banking sector, same device can be used in all possible authentications online services and physical access to office building, home, car.