Seos - powering mobile access /Global/Products/Photos/Seos-mobile-access/New%20seos/Seos524px.jpg Seos is an ecosystem of interoperable products and services for issuing, delivering and revoking digital keys on NFC mobile devices so that they can be used to open doors to homes, hotels, offices, hospitals, universities, industries and commercial buildings. With Yale Digital Door Locks, home owners can send temporary digital keys to visitors, handymen and babysitters from their own mobile phones. Issued keys can be revoked at any time through the same interface. With Essence by VingCard, hotel guests can check in and out with their mobile phones and receive digital hotel room keys before arriving at the hotel. In offices and commercial buildings, HID Readers and Aperio cylinders enable access to rooms and cabinets to be managed centrally.