The smart ring era is here and tech companies are fighting for your finger. Will you wear one?

The smart ring era is here and tech companies are fighting for your finger. Will you wear one?

Samsung's Galaxy Ring on display at Mobile World CongressHugh LangleyThe smart ring era is here. Samsung has entered the space with its Galaxy ring.Apple is said to have considered a ring too.There's a good reason tech companies want to own your finger: subscription revenue.This article is part of "5G and Connectivity Playbook," a series exploring some of our time's most important tech innovations.Prince Harry wears one. Mark Zuckerberg and Jack…