> ## Documentation Index > Fetch the complete documentation index at: https://docs.safesquid.com/llms.txt > Use this file to discover all available pages before exploring further. # Application Identification You need an active SafeSquid account with at least one activation key. Register at [https://key.safesquid.com/](https://key.safesquid.com/) if needed. Log in to the Self-Service Portal at [https://key.safesquid.com/](https://key.safesquid.com/). Select manage signatures option to Manage Keyword Signatures using Self Service portal (https://key.safesquid.com/) Click on Add to add New signature using Self Service portal Fill up signature name and keywords to manage keyword signatures using self service portal Click on submit to save the signature to manage keyword signatures using self service portal Newly added signature can be view after click on submit to save the signature To know more about this feature follow link [Block Emails or Files including archives or Social Posts using Keywords](/use_cases/data_leakage_prevention/block_emails_or_files_including_archives_or_social_posts_using_keywords) ## Adding users using SafeSquid interface for authentication When no Active Directory (AD) server is available for SafeSquid LDAP, administrators can authenticate users by assigning usernames and passwords via the SafeSquid interface. clicking on configure in safesquid interface click on search in access profiles Application Signatures or user list in SafeSquid interface Application Signatures add or edit entry Application Signatures policy form Application Signatures save or submit Application Signatures list with new entry Application Signatures configuration applied ## Next steps * Use [Request Profiles](/use_cases/profiling_engine/request_profiles) to match application traffic. * Use [Access Restriction](/use_cases/access_restriction/access_restriction) to enforce application policy. ## Related topics - [Welcome to SafeSquid](/getting_started/welcome.md) - [Threat Intelligence Feeds](/use_cases/malware_scanning/threat_intelligence_feeds.md) - [User Identification](/use_cases/authentication/user_identities.md) - [Simple Authentication](/use_cases/authentication/ad_simple_authentication.md)