They do have low speed prop planes for shooting down shaheds, but they have a lot less of them than would have been available during WW2.
The V1s were a lot faster than shaheds, and a bit faster than most fighter aircraft of the day. The allies had to use tactics like steep diving to match their speed.
The shaheds are much slower, closer in speed to WW1 vintage aircraft so modern jets have trouble flying slow enough to keep them in gun range.
The so called "rules of war" are made by the strong to raise the barrier of entry and prevent smaller players from even bothering to go to war with them.
But the reality is there are no rules in war, it's a case of win at all costs. You're only going to face punishment for breaking the rules if you lose, if you win you can make up your own rules.
The US should know that well, during the war of independence they didn't play by the established rules under which Britain and France had been fighting for years, they used guerrilla tactics which proved highly effective.
If your only air defence consists of patriot batteries then you have to use them regardless of what's incoming. UAE may well have been unprepared for this kind of attack.
Their initial effectiveness against unprepared enemies is largely down to them being low tech. Air defences were no longer geared up to contend with low speed flying targets. If you'd launched shahed drones during WW2 or even WW1 they would have been very quickly taken out by fighter aircraft of the day.
Ukraine on the other hand has been facing shahed attacks for several years, and have developed multiple significantly cheaper methods to counter them. Most of these methods would not work against a cheap missile flying at mach 5.
2) A missile that travels at Mach 5 but cannot turn AND is made of 'cheap commercial parts' is not radar resistant and will EASILY be shot down. These are fast, cheap missiles good for attacking a significantly inferior opponent, worthless against near-peer opponents such as the US, Russia, and NATO defenses. They are clearly designed to take out Taiwan without US support.
Not worthless at all. They're cheap and can be built quickly, and while they might be easy to intercept, the interceptors are not cheap.
The shahed drones are cheap too, and yet they have done a lot of damage.
Ukraine is launching cheap drones based on converted light aircraft, these are also doing major damage.
If you can build and launch more cheap drones/missiles than the enemy is able to intercept, you can overwhelm their defences and get a few strikes through. The first missiles you send get intercepted, but also give away the launch sites of the interceptors. If you have the resources to keep lobbing cheap missiles then pretty soon the interceptors run out and you score hits.
Ships are an easy target to take out, and submarines very effective tools for doing so which cannot easily be targeted by hypersonic missiles. You'd not be able to launch missiles at the US from ships for very long, at most you'd be able to launch a one off surprise attack from some civilian cargo ships.
Those russian hypersonics are also hugely expensive... The chinese ones are a lot cheaper.
Sure a patriot battery will almost certainly be able to take them out, but how many can it take out and at what cost? Once you run out of interceptors your patriot battery is a sitting duck and so is everything it was trying to protect.
Annual production of the pac-3 is currently around 600 and that's split among all patriot operators globally. The wars in ukraine and iran have also significantly depleted stocks.
Why would such a device need a connection to anything?
Surely it can take the breath sample locally, analyse it, and then either start the car or refuse to do so entirely locally. This is yet another case of things being tied to a cloud service for absolutely no reason, and becoming useless when that service fails.
They are typically e-ink screens in the setups i've seen, so they use very little power. Compared to the store lighting, refrigeration, payment terminals etc the power usage of the labels is absolutely trivial.
The screens will be on the shelves for years and only likely to become waste if get damaged and are replaced, or the store closes. Compare that to paper labels which are often replaced weekly if not even more frequently.
Require that the price cannot go up over the course of the day, but allow reductions (eg selling off stock that needs to be sold today due to expiry date etc). If the prices are going up, they need to be raised and on display before the store opens for business, or at a fixed time if the store is open 24 hours.
If your job was to replace price tags, you might find that with automated digital price tags you no longer have a job at all.
It's the complexity getting out of hand...
You have 30 years of backwards compatibility cruft, layers upon layers of stuff while trying to provide support an almost infinite combination of hardware configurations, applications that try to hook into the system in various intrusive ways, and a huge variety of use cases. It's no wonder things break.
Apple have a different approach - cutting off backwards compatibility, limited hardware configurations, limiting how deeply things can hook into the system etc.
Professional wrestling: ballet for the common man.
