[vort3]

True, I just didn't write that because physical security key is not an option where I live.

Other than security key, it's only phone number or adding account to the phone.

I'm sorry I didn't mention that in my post, I wasn't trying to lie, I just can't obtain physical key and I don't think I have to have physical key to read my emails.

[rstuart4133]

Don't feel bad. I recently went through the process of enabling app passwords and what not for google accounts. I did that because I lost control of one account and decided to implement every recovery option possible on the others - like TOPT's and backup codes. If there is a way to do it without purchasing stuff like tokens or entering phone numbers, I could not see it.

If there is a way of doing it, I suspect it's deliberately well hidden. I also suspect what they enforce varies by country.

[FDSGSG]

Where is that? Judging by your comment history, maybe Kazakhstan? I can easily find physical security keys for sale in Kazakhstan. For example miningshop.kz in Almaty has Ledger Nano S in stock.

Besides, you don't need an actual physical key for U2F.