Built-in WiFi allows you to lock/unlock from anywhere plus set up guest access codes for recurring temporary or permanent access when paired with the Schlage home app or key by amazon app no additional accessories required. For additional convenience enjoy voice commands via Alexa or Google assistant. Create and manage up to 100 access codes for trusted friends and family to use with the fingerprint-resistant capacitive touchscreen with easy one-touch locking. Codes: Pre-set unique 6-digit programming code two pre-set unique 4-digit access codes 100 code capacity.