It is wonderful we now have a strong implementation of 2FA support in both the viewers and the LL websites. To make the use of this easier without weakening security I would like to see support added for Hardware Keys such as Yubico and OnlyKey. This would allow users who wish to use a hardware key rather than entering a changing code. Depending on setup at implementation it is possible to make this more secure than is now and not make it more difficult or simply setup to be most flexible so providing support for this would provide a lot of flexibility. In addition, perhaps LL could become a partner of say Yubico (there are many others, but this is one of the most popular ones), perhaps even OnlyKey as well this would also provide another source of income for LL and make it easier for users that don't wish to find and purchase the key(s) themselves. Considering how many users are in SL this could be a massive deal for LL and companies they might partner with.