Accounts where TOTP code should be appended (or prepended) to the password
This may be a bit of a corner case request, but here goes...
There are some websites (looking at Etrade.com!) where the 2FA TOTP code needs to be silently appended to the password in the same field. There is no visual indication to remind you that a 2FA code is required, and if you forget it just tells you you entered the password wrong.
Another example is the login page to opnsense (and maybe pfsense?) router/firewall software. You can enable 2FA on your router, but then have to remember to concatenate the TOTP code just like on etrade.
It would be nice if I could edit or otherwise flag that login item so 1Password knows to automatically concatenate the password and the 2FA code for me so I don't forget.
 Admittedly, there's a "use security code" checkbox that reveals a 2FA field, but if you've remembered to check that box, you've remembered you need a 2FA code, so that's not really the issue
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