LastPass keeps an encrypted copy of all passwords locally as well as an encrypted copy on their servers. That way, passwords can be accessed locally while offline, or through their server while online from any machine.

LastPass offers multiple multifactor authentication options, including Google Authenticator, Grid Multifactor Authentication, Microsoft Authenticator App, Toopher Authentication, Duo Security Authentication, Transakt Authentication, Sesame Multifactor Authentication, Smart Card Authentication and Yubikey Multifactor Authentication.

All common browsers, including Opera, have plugins that allow automatically filling in forms and generating passwords. All form fill information syncs across all platforms, devices and browsers. Password generator can be adjusted to use or exclude certain characters and patterns.

LastPass will check for re-used and unsafe passwords.

Since version 3.0 the LastPass interface is clean and easy to navigate on all platforms.

LastPass is able to change your password automagically.

LastPass can be set to notify if a user's credit report suddenly changes.

Steve Gibson is a well established security researcher best know for his work with Apple and Atari systems as well as founding Gibson Research Corporation. He was given access to LastPass' source code and confirmed that it's safe to trust its security.

LastPass offers multifactor authentication via Yubikey.

LastPass allows creating passwords for accessing the LastPass Vault that can only be used once. Great for accessing the Vault in public or untrusted places.

Some fingerprint readers, like TouchID on iOS, Samsung, or Sony Xperia devices, can be set up to be used to access LastPass instead of a master password.