Actually this is rather RS232 over spaghetti.
Then why... nevermind
LCD monitors don't flicker at their refresh rate. It simply updates the graphics on the panel per frame at an imperceptible speed. The backlight has nothing to do with the refresh, either.
Newer LED lights often flicker.
Saved you a click.
Squarepusher cones to mind
What do you mean by "tracked and registered?" What is your goal for "securing even more?"
MAC addresses are visible to anyone sniffing traffic for a wireless LAN, even if they haven't joined your network. If you are having anonymous folks join your network and you're granting them access based on MAC addresses, then you could consider this a security risk. They can sniff a MAC, spoof it, and join your network.
Two devices with the same MAC address may cause some routing issues, but it will likely work well enough to have privileged access and be a bad actor. Plus, there are tools that can spoof a network disconnect request as your access point to temporarily kick off the legitimate client.
The easiest way to handle this would be to host two access points. You can typically serve both with one physical piece of hardware. One would be for your private stuff, and you can pretty much give it a full-trust model. Join the network, get the privileges. The other would be for guests. Join that, and you just get Internet access. You can separate these networks with VLANs to achieve this.
Data center heat, with a little external help, warms homes of nearby residents. Nothing unusual or interesting.
Saved you a click.
Billy attempted to sell an Alesis SR-16 that was used in his band for $30k. It's a $100 drum machine. He was selling it himself. No charity or anything; he just tried to hyper-inflate a very common drum machine that is still produced because he thought he added that value to it by owning it. That was pretty weird.
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Aw what a beautiful snake