Notes of meeting – 11th March

We had the pleasure of a presentation on Linux, Raspberry Pi, VPNs, KODI and Geolocation from Dave Williams (our American cousin). Here is the outline of the talk he gave us. I should have recorded it – an oversight!

X86 LINUX

* Define OS

*  Interface between the “guts” and apps

* Linux was developed by Linus Torvalds as a college project

* FOSS (free and open source)

* Many distros, I used Red Hat, SUSE in past. 

* Ubuntu (Zulu for humanity toward others). Provides a good selection of apps. 

* Xubuntu good for older machines

* More secure from malware than windows, I zealously update and I’ve never had a problem

* War stores. No longer so nerd-centric. Apps easy to install with APT and SNAP.

* Unless your name is Harrison don’t dual boot! Install on that old PC in the basement.

* David and Paul dog and pony show

* https://fullcirclemagazine.org/

* https://www.youtube.com/watch?v=D4WyNjt_hbQ

RASPBERRY PI SBC

* Single Board Computer, ARM architecture like phones

* Raspberry Pi is a type of SBC, developed to teach kids to code

* Became popular with computer enthusiasts for projects (eg robotics)

* HTPC limited to two channels

* I use a version of Ubuntu developed for Raspberry Pi

* https://ubuntu.com/download/raspberry-pi

* https://magpi.raspberrypi.com/

VPN

* Virtual Private Network, I use NordVpn

* I always use for bootleg

* Geo Location

* Easiest way is to use as browser extension

* https://www.tomsguide.com/best-picks/best-vpn

KODI

* Can be used to hack media

* Requires add-ons

* Real Debrid to access restricted media  $17 USD 180 days

* Watch in real time or download

* Security concern with Raspberry Pi

* https://troypoint.com/best-kodi-addons/

Geolocate 

* Requires VPN, easily applied through browser extensions

* CBC (Canada)

* SBS on demand  (Australia) 

* I suggest creating a ‘throwaway” email address

* create an account

* log in

The talk led to a lively discussion with many interruptions from yours truly. We then were able to examine the Raspberry Pi that Dave had brought with him, and the three machines running Linux (Ubuntu) that Phil and I had brought along. Two of my machines were “new” in 2008, one of which has still a functioning battery. That’s quite some achievement for a laptop and to see them running up-to-date software – eg LibreOffice, Firefox, Brave and Thunderbird is testament to the usefulness in prolonging the life of old machines. One of my laptops was running Windows XP in dual-boot mode – again an indication that if you’re careful with your internet activity, old machines are not necessarily redundant.

Notes of meeting – 28th March

One of our discussion meetings. Several apologies received. We discussed whether we wanted to continue to use Sight Life if they put the cost of room hire up. Sheila commented that the room hire rate was comparable with other city centre options. We noted that some venues were free, but that none had the capacity, room layout, WiFi and screen that we required for successful meetings. It was noted that some members were prepared to pay £2.50.

We noted Jim’s spoof notifications of Argos and Dell deals, and wondered how any one could expect to get something for nothing. Phil did however comment that if you traded in a Kindle, and did so on the right date with Amazon, you might just approach getting a new one for Free. [It’s also worth remembering that Curry’s/PC World offer a £5 voucher (or cash ???) for old IT equipment.]

We then went through news items – all up on Flipboard, so not links on this page. We focussed on the legal issues surrounding “big tech” both in the EU – the Digital Markets Act and AI legislation, and the US DoJ going after Apple for anti-trust and monopoly reasons. Many commentators have reported that this will be unlikely to be successful and could be drawn out over many years – by which time, things may have changed. Some of us expressed the view that if we were happy to pay more, and happy to accept the closed garden of Apple, then we should be allowed to retain the status quo. Ralph highlighted the need for a level playing field and if there were monopolies these should be challenged. Phil drew the analogy of a car that had limits on what size tyres you could fit. Was this a restrictive practice??

Ian led several discussion points on developments in AI, including advances in breast-cancer diagnosis, the change in permitted usage for military purposes with the acceptable use of Open AI software, and the very good online sessions provided by u3a – details of which are given below …

Generative AI, and other interesting meetings on the Computing Community

‘An introduction to AI chatbots’, Thursday April 4th, 3.30 pm, and ‘AI News’, Thursday April 11th, 3.30 pm – which unfortunately clashes with our next meeting.
Please book via u3a Online Learning Website.

… you’ll probably be amazed at what’s available online from u3a – I’ll try and write a post for the Cardiff website to point members to these resources.

We discussed whether hardware suppliers (in this case Apple) should be bound to give details of what an Update contains, in the light of some concern that the latest release (v.15.4.1 of iOS) has little or no information on the security issues it seeks to resolve. Ralph suggested that this was a wise move, as if you said what you were trying to fix then it might encourage the bad “players” to try and test the weakness on unpatched devices – I’m not so sure. I think there’s an ethical duty on suppliers to state why you should do something and not just say “do it”!!

Phil then in the discussions that followed told us about his attendance at a Bill Bailey concert where he played all manner of electronic and digital musical devices including BlueTooth Ribbon Bells and a laser harp. He also told us that AI was used to create a response to a verse in shanty tunes.

Ralph enquired whether I’d changed my views on cookies, as he’d heard alternative advice recently. I sheepishly had to admit that although I maintained the view that cookies were generally harmless and were there to improve your browsing experience, that I’d recently chosen to reject cookies and had been able to continue viewing the website. So, my position has changed. If you just want to drop into a website on a one-off basis, there’s no benefit in selecting cookies, so try accessing the site after saying”no”. Sometimes however sites require you to switch off ad blockers, if that’s the case you need to make a decision on whether you want to proceed, or not.

Sheila raised the perennial problem of email hacking, spoofing and phishing. There’s been a few strange emails recently which seem to come from a valid address, but are not from the person, and which surprisingly don’t have a “payload”, ie click-here to do something. I will try to get to the bottom of this, but it’s very strange.

Brief notes of meeting – 14th March

I presented using the post from last year as a guide, and referencing these two posts as well …

“Improving home network performance“, and 

“Home networks – some notes“

… I also pointed at the Network Forum where members might wish to raise home networking issues.

I showed a couple of videos from the first post, explaining the difference between Extenders and Powerline networking, and explained the difference between modems, routers and hubs; what the difference between 2.4Ghz and 5Ghz networks is, and when to use each of them, and when you might consider using a Mesh network.

Notes of meeting – 22nd February

First of all my apologies to anyone who turned up at Sight Life on the 7th March. I was as surprised as anyone when I discovered that the shortest month in the year was going to have 5 Thursdays in it. We of course meet on the second and fourth Thursdays of the month, so a gap of three weeks between meetings!

I rapidly went through the new Topics I’d added to the various Forums, reminding those present that this was the place I’d be putting links to items of longer term (reference) interest and/or hints and tips, leaving Flipboard to be the place where news items of shorter term interest would be posted. I thanked Iain King for becoming a Flipboard contributor – the more the better.

We noted this article from Scientific American that highlights just how much electricity will be needed as we continue with our quest for artificial intelligence; a theme built on by Iain and Ian in their recent posts on the Signal group.

Finally, I mentioned that u3a have communities you might be interested in tracking; one of which is a Computing Forum, and I passed on the information that Iain King had shared with me re. Benedict Evans’ newsletters. Maybe more slanted towards the business sector, but also a useful adjunct to our Flipboard magazine.

First Iain King presented some slides and led a discussion on his visit to the Google Accessibility Design Centre (ADC). He stressed that Google didn’t just look at issues of accessibility in IT, but in all design areas including spoons!


I then re-visited the presentation I’d done last year on How does the Internet work? I’ve edited and updated the blog post and so it should be reasonably up-to-date. I highlighted however the following webpages and videos.

First the BBC Bitesize webpage “What is the internet?” It contains a brilliant video which uses pigeons and nests as analogues for the internet and its users. A must watch!!

I then showed this video which explains very well how the internet works, but towards the end betrays the fact that it’s really, really in favour of scheduling and prioritising of traffic and moving away from the long-held philosophy of the internet – net neutrality. The importance of net-neutrality – the fact that all users should be deemed to be equal, and all content providers the same – should not be taken lightly. If this principle falls then you will find investment in the internet for everyone will decline, and those that get the faster internet will have to pay for it. Please watch the Vimeo (a streaming service) video to see the other point of view.

I then showed this video from TED talks. [I mistakenly said that these talks were available from a Smart TV app – that used to be the case, but maybe not now.]

It’s a really enlightening story from an architect who got curious and wanted to discover the physical manifestation of the internet.

Finally I showed this video, one of a series that are worth watching, produced by one of the “fathers” of the internet. Someone who was in at the beginning …

Next time we’ll look at Home Networking.