Is this any good? I'd love to buy one but the USB looks too old-fashioned and doesn't have a case supporting it, possibility of it to break easily is also a thing to be taken into consideration before buying it.
I think it's the best alternative but yeah I admit it looks like a prototype from 2000. There is a tutorial if I remember so you can make your own from scratch.
There are other USBs more "swag" for example FIDO U2F Security Key from Yubico https://www.yubico.com/
By far a superior process compared to google or authy. Sure fire and encrypted privacy. I would suggest the "swag" model if you need to be mobile. The higher end models use NFC and you just touch your smartphone using NFC it authenticates everything. Cannot be beaten by a hacker. Wish we used this process here in this forum!