I believe they're Zigbee Home Automation, not ZLL. Either that or they're improperly reporting that they support ZHA instead of ZLL, which causes issues for 3rd party bridges like Philips Hue. https://developers.meethue.com/comment/2686#comment-2686
You're correct. It says in their FAQ that they're using ZigBee Light Link, AES-128 and have put time and effort into preventing them from being hacked. They also say that they work in a mesh and should be compatible with other products per the ZigBee Alliance.
Don't know why this was downvoted. NB you need to upgrade your pip to the latest to use this if you are on Ubuntu LTS though. (But you are working in virtualenvs so this isn't a problem right?)
Everywhere I've studied made past exam questions available by default - and doing them as part of revision was absolutely standard. Certainly not cheating!
It is interesting that it is so much easier to make friends with someone where they is sexual interaction (not necessarily actual sex right now - can be the possibility of sex in the future). It's not something conscious but the attraction/chemistry seem to smooth over the cultural and language barriers.
Source: my own life and similar anecdotes to yours.
The Dell comes with a package to prevent the windows key working. Don't know why. A search and one command and you'll be using the the windows key properly.
The GP's using it for personal use (I think). OP merely suggested a hack to let GP get on with their life as quickly as possible in 2 lines of bash and one crontab entry - and without learning a new process monitoring utility's configuration. Obviously this wouldn't be suitable for a production site for many users.