Grid Multifactor Authentication is an option for those who do not want to utilize mobile devices. With Grid Multifactor, LastPass will prompt for a code derived from your Grid to log in.
- To activate Grid, go to the LastPass Vault > Account Settings > Multifactor Authentication > Grid.
- Click “View and Print” in the Grid section. The Grid will look something like below and is unique:
- When you have safely saved your Grid, toggle “Enabled” to Yes.
- Click Update.
- Allow Mobile and Bookmarklet Access to Bypass Grid: As Grid Authentication is not currently supported on mobile apps with the exception of Androids, this option controls whether mobile devices and bookmarklets will be allowed to bypass Grid multifactor authentication when enabled.
- Allow Offline Access: Controls whether access to your Vault will be allowed when you are not connected to the Internet. Allowing offline access to your Vault is slightly less secure since Grid can not be actively validated.
Logging In With Grid
Once Grid has been activated, you can log in to your LastPass plugin by providing your email and Master Password as usual. After you press Submit, you will be prompted to provide 4 random values off of your Grid:
You look up each value on the grid and enter it. Grid look-ups are performed much like the game Battleship. Using the sample Grid image shown above as an example, if you were asked for U7, M8, I5, AND K5, the answers would be ‘d, n, p, q.’ Access to your LastPass Account will only be granted if all 4 values are correct.
If you trust the computer, click the Trust checkbox on the Grid dialog so you will not be re-prompted to enter Grid values the next time you log in.
Grid can be deactivated at any time once you are logged in to your Online Vault and uncheck the Grid option in Account Settings.
Logging in Offline
When multifactor authentication is enabled, you can choose whether to allow LastPass to store an encrypted vault locally so you can log in without an internet connection or not. If you enable offline access, you will be able to login without using Multifactor (with the exception of Yubikey) in case of a connectivity issue.
With some internet configurations (typically wireless connections and waking from sleep), LastPass may log in offline first before establishing connectivity to your online vault and prompting for your authenticator code. This may cause LastPass to AutoFill any login credentials you have saved in LastPass for the current page you are on. If you wish to disable offline access, you may do so in your account settings.
Table of Contents
- Help Center and FAQs
- Downloading and Installing LastPass
- LastPass Mobile
- LastPass App for Mac
- Your LastPass Icon
- Your LastPass Vault
- Adding & Filling Sites
- Editing an Existing Site Entry and Editing Form Fields
- Importing Passwords
- Account Settings
- Browser Extension Preferences
- Secure Notes & Attachments
- Password Generator
- Fill Form Basics
- Multifactor Authentication
- LastPass for Applications
- LastPass Security Challenge
- LastPass Credit Monitoring
- LastPass Sentry
- LastPass Command Line Application
- LastPass via USB
- Windows 8 Metro
- Uninstalling & Deleting
- Site Map