For high value accounts, use 2fa with hardware tokens if you can, and maybe use a dedicated computer (old laptop) with a bare bones software installation to minimize the likelihood of malware.

The usual answer for programmable voip is Twilio. I’ve been using vitelity since I’ve been there for a long time, and their support is quite good, but they’re less flexible than Twilio and cost a bit more. A DID (direct inward dial) number from them is $1.50/month instead of $1.

These numbers all terminate in data centers, and some particularly obnoxous websites check for that and won’t do 2FA verification through them. Worst case, you could get a real cellphone and leave it in a drawer and also have it as a useful burner. There are some very cheap ones with 1 year plans on qvc.com (search for tracfone). QVC seems cringy as hell but I’m a bit tempted anyway. There are also some on tracfone.com but QVC has more choices.

You can bridge it through e.g. Twilio but it will add latency that makes the voice calls less pleasant. You’re better off with a phone that has a microphone kill switch, or physically remove the microphones (hack the hardware) and only use an external mic. Or power down the phone altogether.

KitKat (Android 4), If only. I still have an Archos 43 media player that runs Android 2.3.

Cig lighter phone charger won’t supply the 5v? I’d have thought the camera mount and enclosure would take the most effort. Raspberry pi zero with their camera accessory would be the main camera.

That’s pretty cool! Any hardware info? I had thought a diy dashcam project would be most about hardware (rpi zero and 3d printed enclosure maybe) with the software being relatively simple. Using an old phone might be another approach.

Do the police take your dash cam if they pull you over? Does that show on their own badge cam?

Streaming live video takes a lot of bandwidth and connectivity from a car can be intermittent, but maybe it’s enough to send a timestamped hash every few seconds, so there is tamper evidence in case of a deletion.

Anyway, deleting video through a dashcam user interface is like deleting a file on a computer: basically a little bit of metadata is overwritten but the underlying data can usually be mostly recovered with filesystem repair or forensic tools. To really delete it for sure you have to either destroy the media or use special tools to overwrite the data blocks. Or just running the camera for a long time (to make sure the freed blocks get re-used) might do it.

You could also stream to another phone or computer tucked away elsewhere in the car, unless you expect the whole car to be seized.

Dash cams do this continuously I thought. Good? Bad? IDK.