> And how do you know, pre-purchase, whether it does?

By requiring a warning label on it, as the title suggests. Doesn't seem like such a silly idea now, does it?

Jacquesm said it as if he already followed this rule and everyone could choose to do so. But there being no warning labels makes that kinda hard...

> Doesn't seem like such a silly idea now, does it?

I never said that.

Usually there is something to be found on the internet about whatever it is that you are about to purchase and this most of the time is pretty accurate about hidden online components that ought to be disclosed but aren't. For instance the Nest, when I first heard about it I was interested, when I realized it is tied to a service I decided not to buy it. Ditto smart doorlocks and other clever IoT stuff that seemed attractive until I found out that it requires 'always on' internet and is hard or even impossible to upgrade besides not being clear about what data is being sent to the mothership.

My navigator is an elderly TomTom, my phone an old Nokia and so on. I seem to be stuck in stuff that is now a generation or two behind the times but I've yet to be convinced that the 'new' stuff is better in a way that outweighs the privacy and security risks.

It's usually on the box, because manufacturers think the cloud is a feature, not a problem.