jsjakkanf

I got many accounts. Google, Apple, LinkedIn. How do I know which one I used last time I logged into some service?

The author speaks about narrowing down this mess, so I think it's quite related.

There are lots of courses on wireless communication. I think there's a big community there that doesn't participate in amateur radio. For me there's no reason to build huge antennas and high power, when I can build my low power, high speed WiFi setup in the University lab.