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Comment by ortusdux | Hacker News Reader

IIRC, a while back that the MPAA was pushing for a law that would require video cameras to stop recording if they detected a specific trigger. The intent was to prevent people from filming in movie theaters, similar to the EURion watermarking constellation found on most bank notes. I can't imagine how things would have turned out if that technology had become standard and inevitably abused.

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In many Android phones you can't record calls and call recording apps don't work.

When I recently reported a crime police didn't show up and when I asked them to come for a follow up, they lied that I have not asked anyone to come. The lovely lady even said "We listened to your call and you didn't ask us to come when incident happened."

Google just broke call recording again on my Pixel 4 with their latest Android update. They've done this multiple times in the last few years. Truly deplorable..

The reason is mostly technical. Depending on the phone, call audio isn't implemented as much in software as wired directly (in some variable degree) to the radio hardware.

This is why the quality and success rate of call recording apps varies - it depends how many kinds of configurations the app authors managed to implement support / workarounds for.

Is there any android app you would recommend for call recording?

Is that so? I can make phone calls with my iPhone on wireless Bluetooth headphones. Does the radio hardware directly stream to whatever headphones my iPhone is paired with? I suppose it’s possible, but it strikes me as unlikely.

Judging from that call recording apps apparently need to implement support for recording calls over Bluetooth separately, I would conclude that this does go over a different path, but still needs to be handled explicitly.

No, I am sure it is intentional. I have call recording working on my phone, but I know for a fact the pending software update I have disables that functionality.

The success rate varies, because of the cat and mouse game with manufacturers.

As some who tinkers phones, this is very true, especially with phones equipped with Qualcomm chipsets (note that VoLTE and VoWiFi are decoded in software though).

Bullshit. They break it with updates on phones where it worked just fine. They also removed access to root folders on a whim. This sucked for those of us with locked bootloaders, without root we now lost access to those folders and the contents therein.

> They also removed access to root folders on a whim.

I don't know what you mean by this exactly, but from the manufacturer's view, any method of allowing the modification of the operating system software is a vulnerability (because the same could be done to e.g. install rootkits). This is why many devices allow unlocking the bootloader (as the official way to modify the OS) but announce this loudly on boot.

What is you country (of your SIM card)? If it's Asia, I'm definitely sure that circumventing that restriction (even analog means) will get you to jail.

Edit: also some parts of the US!

Sadly, the HN can't handle valid concerns.

Is there any app on playstore / apk out there that reliably fulfills the job for both phone and VoIP calls?

that more or less happened. all BD players required to implement audio fingerprinting

I'd lean towards "less", a unique fingerprint provides completely different functionality than a kill sound. The only connection is the MPAA liked both.

What is BD in this context?

I assume blu-ray disc

https://en.wikipedia.org/wiki/Cinavia

I am surprised I never heard of this before. It's a watermark not a fingerprint. The audio would have a watermark embedded in it, and if the player finds the watermark it requires the disk to have encryption. That would be pretty neat if it wasn't awful.

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