2 factor authentication via app/texting I’d imagine.

An authenticator app is better than basically anything but a physical token / key generator, but the apps are more universally supported. No one is probably going to spoof your phone number to get into your accounts… But doesn’t hurt to me more secure about it anyway.

Yes, but littering used to be a legitimately big problem to. Like the hole in the ozone, now that it’s “solved”/ the norm for it to be getting better the focus should shift to other things.

Google Glass purposefully made it obvious what they were. The newer glasses without cameras from Meta et al basically look like regular glasses if you can’t see the waveguide in the lenses.

German copyright laws?

Who knows.

Special relativity was a niche branch of interest until we needed to correct for time signal differences between moving satellites. Quantum mechanical understanding of electrons was a weird quirk of math until they used electron buckets to make SSDs.

Publically funded general research leads to unexpected uses.