I wasn't aware of all of those, will check them out - thanks for sharing!

Yes I believe you are right in that the tech is catching up with concepts that seemed futuristic in the past. For example the hardware today supports much more than it would have been able to do, say, 5-10 years ago.

Our hypothesis is that the current solutions out there still require the consumer to buy something, wear something, install something etc. - while we want to build something that becomes instantly accessible across billions of devices without any friction for the actual consumer.