I thought QR codes were stupid, but this Home Assistant automation proved me wrong


While QR codes can be useful in some circumstances, I’d never felt like they would be much use in my smart home. It took one automation to make me realize how useful they could be.

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How QR codes can trigger Home Assistant automations

The magic of webhooks

A QR code is essentially just a fancy way to store a small amount of information, which is often a URL. If you scan a QR code on a food product, for example, it might take you to the manufacturer’s website.

You can use QR codes to trigger automations in Home Assistant. If you add the Webhook trigger to your automation, Home Assistant generates a unique webhook ID that you can use to run the automation.

It’s then possible to create a QR code that encodes a URL containing your webhook ID. When you scan the QR code, the URL is launched, and the webhook trigger is activated, running your automation.

By default, this will only work over your local network; you won’t be able to trigger your automation by scanning a QR code when you’re connected to a different network. However, if you have a Home Assistant Cloud subscription, webhook triggers will work even if you scan the QR code outside your local network. You can also get them to work using other remote access options, such as a Cloudflare tunnel.

I didn’t see any real purpose to QR code triggers

There are easier ways to trigger automations

For a long time, I didn’t see how triggering Home Assistant automations via a QR code would be of any real use. Scanning a QR code requires you to pull out your phone, open your camera app, point it at the QR code, and then tap the link that appears. It’s a lot of effort to get an automation to run.

There are plenty of quicker and easier ways to manually run Home Assistant automations. You can use a smart button or scan an NFC tag, you can use a voice command, or you can tap something on your smart home dashboard. Scanning a QR code always felt less useful than these other methods.

I’d tried most trigger methods in Home Assistant, but I’d pretty much resigned myself to the fact that QR codes weren’t worth the effort. I was happy to ignore them.

Home Assistant Green

Dimensions (exterior)

4.41″L x 4.41″W x 1.26″H

Weight

12 Ounces

Home Assistant Green is a pre-built hub directly from the Home Assistant team. It’s a plug-and-play solution that comes with everything you need to set up Home Assistant in your home without needing to install the software yourself. 


Where QR codes are actually useful

It’s a simple way to share Wi-Fi credentials

Two hands holding a phone with a QR code in the center and a Wi-Fi icon. Credit: Lucas Gouveia/How-To Geek | Marina Demeshko/Shutterstock

There is one way that QR codes can be incredibly useful in your home. They’re an excellent way to share Wi-Fi credentials without having to try to spell out your long and complicated password.

You can generate a QR code that contains three pieces of information: your network name (SSID), your Wi-Fi password, and the authentication type that your network is using. When someone scans a QR code that contains this information, their phone reads the information and asks if they want to join the Wi-Fi network. If they agree, their phone will connect to the named Wi-Fi network using the password encoded in the QR code.

This is a genuinely useful way to use QR codes. Scanning a code is much quicker than trying to type in a long password on your phone. I have a guest Wi-Fi network set up at home and have a QR code that guests can scan if they want to access the Wi-Fi.

I also have a guest mode set up for my smart home, for when guests come to visit. This disables some automations, so that the guest isn’t plunged into darkness when my wife or I leave the house, and no one is detected as being at home. It dawned on me that it might be possible to have the guest mode automatically turn on when someone scans the guest Wi-Fi code.

One QR code to rule them all

A single QR code doing two jobs

Two guys sitting on a beanbag using their phones, a Wi-Fi icon in the background, and the guest Wi-Fi connected. Credit: Lucas Gouveia / How-To Geek | ViDI Studio / Shutterstock

Unfortunately, this wasn’t as simple as I first thought. By default, a QR code can only do one thing. You can create one that will open a webhook URL, and you can create one that will connect to a Wi-Fi network, but you can’t easily create one that will do both.

I could create two separate QR codes that the guest could scan, but that isn’t very user-friendly or elegant. Then I realized that I didn’t need to use a second QR code at all.

Depending on your router, there are some Home Assistant integrations that can detect when a new device joins a Wi-Fi network. I was able to use this as a trigger to toggle guest mode on. When a guest scans the Wi-Fi QR code, their phone connects to the guest Wi-Fi network, and the automation triggers, turning guest mode on.

I finally have a useful workflow that’s built around a QR code. It makes life simple both for my guests and for me, and that’s a real win.


Don’t write off Home Assistant features

Home Assistant is so packed with features that there are plenty of things I’ve never used. Sometimes, the features that you think you won’t need may turn out to be really useful after all.



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Recent Reviews


As I’m writing this, NVIDIA is the largest company in the world, with a market cap exceeding $4 trillion. Team Green is now the leader among the Magnificent Seven of the tech world, having surpassed them all in just a few short years.

The company has managed to reach these incredible heights with smart planning and by making the right moves for decades, the latest being the decision to sell shovels during the AI gold rush. Considering the current hardware landscape, there’s simply no reason for NVIDIA to rush a new gaming GPU generation for at least a few years. Here’s why.

Scarcity has become the new normal

Not even Nvidia is powerful enough to overcome market constraints

Global memory shortages have been a reality since late 2025, and they aren’t just affecting RAM and storage manufacturers. Rather, this impacts every company making any product that contains memory or storage—including graphics cards.

Since NVIDIA sells GPU and memory bundles to its partners, which they then solder onto PCBs and add cooling to create full-blown graphics cards, this means that NVIDIA doesn’t just have to battle other tech giants to secure a chunk of TSMC’s limited production capacity to produce its GPU chips. It also has to procure massive amounts of GPU memory, which has never been harder or more expensive to obtain.

While a company as large as NVIDIA certainly has long-term contracts that guarantee stable memory prices, those contracts aren’t going to last forever. The company has likely had to sign new ones, considering the GPU price surge that began at the beginning of 2026, with gaming graphics cards still being overpriced.

With GPU memory costing more than ever, NVIDIA has little reason to rush a new gaming GPU generation, because its gaming earnings are just a drop in the bucket compared to its total earnings.

NVIDIA is an AI company now

Gaming GPUs are taking a back seat

A graph showing NVIDIA revenue breakdown in the last few years. Credit: appeconomyinsights.com

NVIDIA’s gaming division had been its golden goose for decades, but come 2022, the company’s data center and AI division’s revenue started to balloon dramatically. By the beginning of fiscal year 2023, data center and AI revenue had surpassed that of the gaming division.

In fiscal year 2026 (which began on July 1, 2025, and ends on June 30, 2026), NVIDIA’s gaming revenue has contributed less than 8% of the company’s total earnings so far. On the other hand, the data center division has made almost 90% of NVIDIA’s total revenue in fiscal year 2026. What I’m trying to say is that NVIDIA is no longer a gaming company—it’s all about AI now.

Considering that we’re in the middle of the biggest memory shortage in history, and that its AI GPUs rake in almost ten times the revenue of gaming GPUs, there’s little reason for NVIDIA to funnel exorbitantly priced memory toward gaming GPUs. It’s much more profitable to put every memory chip they can get their hands on into AI GPU racks and continue receiving mountains of cash by selling them to AI behemoths.

The RTX 50 Super GPUs might never get released

A sign of times to come

NVIDIA’s RTX 50 Super series was supposed to increase memory capacity of its most popular gaming GPUs. The 16GB RTX 5080 was to be superseded by a 24GB RTX 5080 Super; the same fate would await the 16GB RTX 5070 Ti, while the 18GB RTX 5070 Super was to replace its 12GB non-Super sibling. But according to recent reports, NVIDIA has put it on ice.

The RTX 50 Super launch had been slated for this year’s CES in January, but after missing the show, it now looks like NVIDIA has delayed the lineup indefinitely. According to a recent report, NVIDIA doesn’t plan to launch a single new gaming GPU in 2026. Worse still, the RTX 60 series, which had been expected to debut sometime in 2027, has also been delayed.

A report by The Information (via Tom’s Hardware) states that NVIDIA had finalized the design and specs of its RTX 50 Super refresh, but the RAM-pocalypse threw a wrench into the works, forcing the company to “deprioritize RTX 50 Super production.” In other words, it’s exactly what I said a few paragraphs ago: selling enterprise GPU racks to AI companies is far more lucrative than selling comparatively cheaper GPUs to gamers, especially now that memory prices have been skyrocketing.

Before putting the RTX 50 series on ice, NVIDIA had already slashed its gaming GPU supply by about a fifth and started prioritizing models with less VRAM, like the 8GB versions of the RTX 5060 and RTX 5060 Ti, so this news isn’t that surprising.

So when can we expect RTX 60 GPUs?

Late 2028-ish?

A GPU with a pile of money around it. Credit: Lucas Gouveia / How-To Geek

The good news is that the RTX 60 series is definitely in the pipeline, and we will see it sooner or later. The bad news is that its release date is up in the air, and it’s best not to even think about pricing. The word on the street around CES 2026 was that NVIDIA would release the RTX 60 series in mid-2027, give or take a few months. But as of this writing, it’s increasingly likely we won’t see RTX 60 GPUs until 2028.

If you’ve been following the discussion around memory shortages, this won’t be surprising. In late 2025, the prognosis was that we wouldn’t see the end of the RAM-pocalypse until 2027, maybe 2028. But a recent statement by SK Hynix chairman (the company is one of the world’s three largest memory manufacturers) warns that the global memory shortage may last well into 2030.

If that turns out to be true, and if the global AI data center boom doesn’t slow down in the next few years, I wouldn’t be surprised if NVIDIA delays the RTX 60 GPUs as long as possible. There’s a good chance we won’t see them until the second half of 2028, and I wouldn’t be surprised if they miss that window as well if memory supply doesn’t recover by then. Data center GPUs are simply too profitable for NVIDIA to reserve a meaningful portion of memory for gaming graphics cards as long as shortages persist.


At least current-gen gaming GPUs are still a great option for any PC gamer

If there is a silver lining here, it is that current-gen gaming GPUs (NVIDIA RTX 50 and AMD Radeon RX 90) are still more than powerful enough for any current AAA title. Considering that Sony is reportedly delaying the PlayStation 6 and that global PC shipments are projected to see a sharp, double-digit decline in 2026, game developers have little incentive to push requirements beyond what current hardware can handle.

DLSS 5, on the other hand, may be the future of gaming, but no one likes it, and it will take a few years (and likely the arrival of the RTX 60 lineup) for it to mature and become usable on anything that’s not a heckin’ RTX 5090.

If you’re open to buying used GPUs, even last-gen gaming graphics cards offer tons of performance and are able to rein in any AAA game you throw at them. While we likely won’t get a new gaming GPU from NVIDIA for at least a few years, at least the ones we’ve got are great today and will continue to chew through any game for the foreseeable future.



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