Visually confirming a visitor’s identity before granting access is a fundamental security practice. This can involve direct observation through a peephole or window, or indirectly through a technological intermediary like a smart doorbell or security camera. For instance, a homeowner might use a peephole to identify a delivery driver before opening the door.
This act provides a crucial layer of safety, preventing unwanted entry and potential harm. Historically, this has been accomplished through architectural features like peepholes and judas windows. Advancements in technology offer enhanced methods, such as video doorbells providing real-time remote viewing and recording capabilities, further improving security and peace of mind. This practice also offers practical benefits beyond security, allowing residents to avoid unwanted solicitations or interruptions.