Usually when we’re talking about T-Mobile, AT&T, and Verizon in the same sentence, it’s because T-Mo is poking fun at its rival US carriers. This time, though, the three companies are working together on a joint venture. T-Mobile, AT&T, and Verizon have rolled out a new mobile security solution for consumers. Called ZenKey, it’s meant to make it easier for you to log in to apps and websites, letting you just tap a button rather than having … [read full article]