The impending doom of your old Smart TV
Much of internet traffic, including streaming video and streaming audio, is authenticated/encrypted by information exchanged using public key systems and certificates. The certificates are typically valid for a limited time – days, months or years --, and are renewed as required. The certificates are validated/authenticated against root certificates which are typically valid ~ 25 years.
The root certificates are known by your phone, tablet, computer, smart device, or smart TV, and occasionally you may get an OS update which updates the Root Store. If not… well the root certificate used by your App may have been 20 years old when the app was first issued. Your root store may have contained a related certificate that was only 15 years old, enabling the an App update to switch certificates and continue working for another 5 years.
But not all root certificates are related, and, unless you get an OS update, eventually all of the certificates in your Root Store will age out. When that happens none of your streaming apps will work.
This affects your old Apple iPad: if it’s too slow for OS updates, it doesn’t get Root Store updates, and Apps start aging out.
But it particularly affects Smart TVs, because (1) they typically don’t get OS updates, and (2) they typically use network Apps. In theory, your brand-new TV could be good for 25 years, then none of the Apps work. In practice, it’s starting to happen right now, like the first couple of pop-corn kernels popping. Big streaming providers are putting in place temporary workarounds to stay on air, tiny providers are withdrawing support from old devices, stuff that was bought 10 years ago is approaching end-of-life.
Most digital stuff that was brought 10 years ago has already reached EOL anyway, particularly smart TVs. But this is a fun new way for your stuff to become inoperable, one that you probably hadn’t thought about.