It usually involves a user inputting a password to gain access, before being required to input a second code or password. The user only knows this second code when they receive it from the third-party wallet service through a secured account held by the user, usually an email address or text message.
There are still risks remaining with using these alternative secure accounts in receiving these important access codes, so many use dedicated 2FA apps as an alternative.
Added security measures recommended when accessing online wallets also include being aware of the network being used.
Using a secured home network rather than public WIFI offers a more private internet source less susceptible to hacking.
If a WIFI network cannot be avoided, online wallet users should use a VPN when connecting so all their data and movements are encrypted and hidden from outside threats.