Adding new user to access your SGUDA LOCK is easier than ever! And much safer than hiding or copying keys! Our SGUDA APP makes it easier for you to invite the people you trust and share the temporary codes with your friends or guests (even they don’t have a smartphone) to access. You can also choose what these users can do by assigning them one of 2 access levels: Owner and Guest. All these wonderful features may be the peace of mind of you and your love ones need.