User psychology plays a huge factor when it comes to user acceptance. Why the round trip to my email every time i want to get in? Majority of people's brains aint wired like that. The approach is cool for an easy-to-access email domain like gmail and the like,
if i register with some kind of company secure email that only work when accessed from a certain location then what?
Sounds cool at first but am really failing to see solid pros to using this approach.