Methods, devices and electronic keys for access-restricted environments

US11600122B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Emanuele Bruno Bodini · Munich, DE
• Matthias Eberl · Schweinhub, DE

Key dates

• Filing date: Jun 18, 2021
• Grant date: Mar 7, 2023
• Expiry date: Jun 18, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2209/63
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method includes determining, by a first radio transceiver of an access-restricted environment, of first direction information of a first radio signal transmitted between the first radio transceiver and a wireless device. The method further includes determining, by a second radio transceiver of the access-restricted environment, of second direction information of a second radio signal transmitted between the second radio transceiver and the wireless device. The method further includes receiving, by the access-restricted environment, of angle information determined by an electronic key associated with the access-restricted environment. The method further includes determining, based on the first direction information, the second direction information and the angle information, whether the wireless device is a relay device or the electronic key. The method can be based, for example, on a Bluetooth technology.