US Patent 11232666 Verified access to a monitored property

A method includes receiving, by a monitoring system that is configured to monitor a property and from a visitor to the property, a personally identifying code and a biometric identifier, determining that the personally identifying code corresponds to a stored personally identifying code, receiving, by the monitoring system, location information that corresponds to locations of the visitor during a time period before visiting the property, comparing the biometric identifier to a stored biometric identifier, based on determining that the personally identifying code corresponds to a stored personally identifying code, comparing the biometric identifier to the stored biometric identifier, and the location information, determining a confidence score that reflects a likelihood that the visitor is authorized to access the property, based on the confidence score that reflects the likelihood that the visitor is authorized to access the property, selecting, from among multiple monitoring system actions, a monitoring system action, and performing the monitoring system action.