WorldDev

Yes, I think that's right, you've found the root of the issue. Thanks for that link. Not great, I expected better from Apple.

Right, but I deleted the app and all its data. I made sure there was no other app from the same vendor left on the device.

I checked the "Passwords" and there was no entry for these apps (I think that's the only place for the keychain on ios?).

And it's not about the phone telling its phone number.

I tried that, and it still has access to account username on reinstall.

No, I made sure I had only instagram installed and no other app from the same vendor.

Got it, thanks

Interesting, thank you. Did you compare it to other methods and found it better?

That makes sense, thanks!

Thanks for the idea. I think it's a great one, but I have a few concerns:

1) The two computers are on 2 different grounds, so I believe it could damage the computers. So I would like to isolate the ground somehow, I am not sure what the options are. I tried to look for opto-isolated options, but didn't really find something clear. Do you have any suggestion?

2) This specific chip is marked NRND (not recommended for new designs) on ftdi's website, So it feels slightly wrong to use it?

I see, you are unplugging and re-plugging, instead of just pressing a button. That makes sense. It feels like a usb mechanical switch should exist, but I guess it does not.

Another option that I looked at is whether I could use the switching capability on the device itself. For example the new Logitech MX 4 can switch between different computers. It also has a wireless connection, versus bluetooth connection. Do you have a sense whether switching with a device like that is enough of a separation?

That's interesting, thanks for sharing.

> Modern peripherals may have local storage

Do you mean the flash that contains the code for the microcontroller?

> I have a dumb USB switch

I am not 100% sure I understood. Is the "dumb USB switch" the paperclip?

No problem at all, I didn't interpret it as sarcastic.