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Alternatively, if your tropical or marine fish ever suffer from white-spot disease (actually a nasty protozoan), you use methylene blue to kill the parasite.


Knew it from fishkeeping and how it stains everything except glass. Then I saw it helps make the less-than-natural environment to certify biodegradable plastic. Didnt know human consumption is still permitted.


"Safe enough to swallow" seems like a scary oversimplification for alpha-emitting substances ?


Depends on intensity. Microgram quantities of plutonium should be generally safe (unlike, say, microgram quantities of polonium).

Not all alpha emitters are created the same.



TFA directly recommends this, as well as other good alternatives.


Yup +1 for this, it makes Lighthouse happy


And (at least) two in Paris. One mounted on stilts at CDG2, which depending on how you taxi you may or may not see from the plane, and one just outside ORY, which is maintained by an association, and visitable.


And one still in the Bourget museum?


We did extensive research on the subject, there is no mystery. iOS will only read MIFARE tags with NDEF formatted data. If you write NDEF data to a formatted MIFARE card, it will be 'compatible' with iOS.

Otherwise, only the UID can be detected. The real mystery is why Apple refuses to open the low-level read commands. (To read NDEF, or determine that the data is _not_ NDEF, you need to read the card.)


It's not a mystery - it's anti-competitive behavior where they only want to give access to low-level NFC access (required to enable things like door locks, car keys, payment/loyalty card systems, transport, etc) to "partners" who sign an NDA and agree to a rev-share.


For all the things wrong with/bad about Apple's iron grip on low-level interfaces, in this case that's not the only reason:

MIFARE Classic uses a mandatory, proprietary (presumably still patented) encryption algorithm even for "world-readable" cards, on top of the ISO 14443-3 standard. I'm not even sure whether Apple could legally offer that capability without licensing it from NXP.

On Android, only devices with an NXP chip support these tags for the same reason.

You could argue that Apple could just provide even lower layer access to the contactless interface to allow apps to implement it in software, but I'm not sure if that's feasible (due to timing constraints).

(Note that the article doesn't specify which MIFARE tags it is about. If it's MIFARE Classic, something must have changed, and maybe Apple has licensed the required NXP patents? DESfire should work with iOS without jumping through any hoops, since that implementation is ISO 14443 compliant all the way up to -4.)


Seconded. There’s almost certainly NXP IP used in nearly all NFC implementations which makes them subject to their terms.

Those terms are in turn set by the partners that asked for these technologies to be developed in the first place. And so any development gets slowed to a crawl in this space.


Didn't apple announce earlier this year they were going to open NFC up more? What ever happened to that?


It’s open to developers as of iOS 18.1:

https://developer.apple.com/support/nfc-se-platform/


That's for card emulation. This article is about using iOS devices as readers.

ISO 14443 card reader functionality has been made available some iOS versions before, but it's still restricted (e.g. you can't select any "payment" ISO 7816 applications, you have to predefine the list of AIDs you want to be able to select, and you don't have lower layer access to ISO 14443).

I'm not aware of any announcements to further open up "reader" mode.


Agreed, but it’s certainly more open than it used to be. At least now you can emulate a variety of cards directly in an app.


Big companies that can afford to pay the certification fees maybe can; I definitely can’t. The entitlement is not available to regular app developers, unfortunately.


In the EU, maybe. And even then you will most likely need to beg for an "entitlement" to use it which may have requirements around being a registered business, etc so hobby apps are still excluded.


There's two versions of access to "card emulation" mode:

- The EEA-only HCE (which lets you emulate the card in your app in software, for a limited list of use cases, which makes it a non-starter for fully offline systems unfortunately, as there's no protection against exfiltrating any keys from the app), and

- The some-non-EEA-countries-only "full smartcard access" solution, which requires you to pay Apple and do a ton of (presumably also very expensive) certification.

So for different reasons, neither is something in scope for hobbyists at the moment, unfortunately.


Ah - this brings back memories.

Back in 2015 I was tech lead for a modern (web based) SaaS library management system and getting it to work with RFID tags with a wrapper application was all sorts of fun and games.

We got RFID library tags working on Android, but with iOS locking down NFC access it turned out to be impossible and we had to get libraries to buy bluetooth connected RFID scanners.


It's not a mystery - NFC features are cool but contactless payments are valuable. Nothing that could possibly interfere with that will be tolerated.


Most modern amateur rigs are now SDR based. The big brands (YAESU, ICOM etc) seem to lean into SDR as QOL improvements (large bandwidth real time spectrum analysers to see what's going on across the whole band, Digital Noise Réduction that really works, etc), while preserving the heavily appreciated look and feel of a classic rig.

The Chinese SDR-based rigs have more unique interfaces, and there are many to choose from.

It's worth bearing in mind that most "Classic" desktop rigs output 100W, across 1MHz - 50MHz for HF - this needs to be supported by components that take up place.

Devices that operate at 10W are much smaller (and are typically chained with a larger indépendant amp..)


Adding our recent experience with Klaviyo. Klaviyo charges by "profile". When paired with Shopify, it automatically imports / pulls customer information 5o it's servers even when the customer specifically opted out of marketing.

First month, we were debited 3500EU for opted-out profiles that they had auto-pulled, against the consent of customers and us.

Even with the CEO looped in on emails, we had to threaten chargebacks before they refunded.

They also refused to remove data under our official GDPR request.


I don’t remember how, but you can lock in a lower tier plan and they will stop sending emails for the month once you hit that thresold. I have a small store that uses the free tier like this for automatic emails and when we need to send promotional emails we just use Shopify native email app which is 100x cheaper than klaviyo


That explains why that box hasn't worked when I've used Shopify stores before. I couldn't be bothered to take them to task individually, but I figured they were using some kind of crappy "legitimate interest" basis.


Taking into account the distances in Australia, I've never understood why the speed limit is so low.

Australia has an average "top speed" of 100km/h (110km/h in certain states) - whereas many other countries, with varying degrees of better or worse infrastructure, have average "top speed" of 130km/h - and yet have similar traffic fatalities.

Turkey: 130km/h (and fairly poor infrastructure compared to europe): 6.7 fatalities per 100k France: 130km/h (most people drive at ~145 on highways - only 1 point if you hit a radar) - 5 fatalities per 100k Australia: 100km/h - 4.5 fatalities per 100k

It can't just be speed, otherwise other 'similar' countries would be orders of magnitude above Australia.


> It can't just be speed, otherwise other 'similar' countries would be orders of magnitude above Australia.

It's not just speed.

The standards of driving in Australia is terrible. There's an aggressive attitude, tail gating, no lane discipline, if someone is going way under the speed limit, you come to an overtaking lane, go to over take they'll speed up as "you are not passing me" etc. If you watch "Dash Cam Owners Australia" on YouTube half the incidents are avoidable but because "It's my right of way" or "I'm in the right" the driver will drive straight in to the incident rather than give way and avoid ignoring being “dead right” is still dead.

I've driven/ridden in countries with terrible roads, no real rules, and to the average person looks like chaos but it seems to just work. The difference is non of these countries are aggressive drivers.

When I moved to Australia I used to think the low national speed limits were silly. Now I think it'd be carnage if they are increased given the Australian driving standards.


I just spent a few weeks in the US. I assure you that Australia is fine.


There is some kind of trope that goes “my $location has the shittiest drivers in the world”. The actual reality is all drivers suck everywhere in the world. Except me and you of course. We are obviously above average. (And there is some urban lore floating around that says “most” people surveyed report they are “above average” drivers)

I also think the same formula holds for shipping companies, cellphone carriers, and airlines. All airlines suck, all cellphone providers suck and all shipping companies suck too. Oh and banks too.


> The actual reality is all drivers suck everywhere in the world.

Some countries require much more training, have higher standards of vehicle maintenance, and have other cultural differences.

Did you know [1] that Germany, land of unlimited-speed-limit autobahns, has 3.7 road deaths per 100,000 inhabitants and 4.2 deaths per billion vehicle-km?

While the USA has 12.9 road deaths per 100,000 inhabitants and 6.9 deaths per billion vehicle-km?

Australia, with 4.5 road deaths per 100,000 inhabitants and 4.9 deaths per billion vehicle-km is in between.

[1] https://en.wikipedia.org/wiki/List_of_countries_by_traffic-r...


Except I’ve driven extensively around the world and I’m not an Australian only being in Australia for the past few years.

I’ve driven the world most dangerous roads that’s my thing. Often you wouldn’t even call them roads.

I felt more safe on a goat track with a coach coming the other way and sheer drop at the side of the road or highway with cows in the middle of the road and chaos traffic than Australia. Even 150mph down the Autobahn felt safer than 110kmh on an Australian highway.

Every car journey in Australia I play a game, spot the potential accident ahead as someone nearly crashes or does something stupid.

Watch dash cam owners Australia, half of it’s avoidable but the driver drives straight in to it rather than defensively avoid putting themselves in a dangerous situation

It’s absolutely an attitude/cultural issue. They have a lengthy process to get a license however I notice there’s a preference of parents teaching their bad habits vs professional driver training.


12 per 100K in the US.

I wouldn't say Australia is fine but it is almost in a different ballpark. The frustrating thing here, in the US, is the ambivalence.


> The standards of driving in Australia is terrible.

I think this is common in many places where a significant portion of the population lives in low density areas (eg: American, Australian and Canadian suburbs.) Outside of major city centers it is very difficult to live without a car, so states and provinces choose to set a very low bar for acquiring and keeping a driver's license.


Out in the bush, where the distances are truly stupid (like 200km to the next anything) the care for and policing of the speeding limit is much less, if present at all. The speed limit there probably won't affect traffic fatalities that much, as the density of vehicles is very low. So surely the speed limit may as well be higher.


Out in the bush the risk is hitting animals, and the roads are narrow.

The speed limit is already 130km/h in Northern Territory anyway.


Since a few updates ago, margins and pages are "limitless", so you can scroll a page (including PDFs) to the side to reveal a parallel page / much larger margin.


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