Knowledge Base Frequently Asked Questions Salesforce Is there a charge for the YubiKey for Salesforce application? Can any YubiKey be used for the Salesforce application? Can I install YubiKey for Salesforce on my Professional or Group edition? How do I log in to YubiKey for Salesforce on my mobile device? How do you uninstall YubiKey for Salesforce Login Flow? Can I use more than one YubiKey with my user account, or use one YubiKey with multiple user accounts? How does the OTP get validated? Do I need to individually provision users? Do I need to install anything on my (or my user’s) computer to use the YubiKey?