perio is a short distance wireless communication protocol combined with a locking mechanism, which is designed to serve as the link between an online electronic access system and a mechanical lock. Any number of existing doors can be equipped with Aperio, and at a cost level far below installing a regular electronic access system everywhere.

The Aperio technology is designed for future security demands in that it uses advanced encryption standard (AES) via a wireless connection. The technology is fully compatible with RFID technologies, which means users do not need to change existing cards. Aperio's compatibility makes integration into other systems easy. It offers high control over usage with audit trails and can be centrally controlled. Access rights are managed using the existing electronic access control management software.

Aperio was developed through collaborative research and development within Assa Abloy.