Assa Abloy Ab

Håkan Olsson

Frans Lundberg

Tomas Lars Jonsson

Sona Singh

Stefan Strömberg

Kenneth Pernyer

It is provided a method for providing connectivity for a plurality of Internet of Things, IoT, devices. The method is performed in a connectivity device and comprises the steps of: detecting presence of a connector unit in one of a plurality of connector interfaces; obtaining connection data from the connector unit, the connection data being associated with a specific IoT device; connecting, using a wireless communication module of the connectivity device, to the IoT device using the connection data associated with the IoT device; and wherein the method is repeated for a plurality of connector units.

Providing connectivity for a plurality of IoT devices

It is provided a method for managing central secret keys of a plurality of user devices associated with a single public key. The method is performed in a key manager and comprises the steps of: receiving, from a first user device, transformation data and an identifier of a second user device; obtaining a first central secret key associated with the first user device; generating a second central secret key by applying the transformation data to the first central secret key, wherein the transformation data is applied in reverse to how the same transformation data is applied by the first user device to a device secret key of the first user device; and storing the second central secret key in association with the second user device.

Managing central secret keys of a plurality of user devices associated with a single public key

It is provided a method for determining a location of a mobile device. The method comprises the steps of: obtaining a first maximum distance between a first anchor point and the mobile device; generating a first circular geometrical object having a radius based on the first maximum distance; generating a first polytope encompassing the first circular geometric object, wherein all angles of the first polytope are right angles; obtaining a second maximum distance between a second anchor point and the mobile device; generating a second circular geometrical object having radius based on the second maximum distance; generating a second polytope encompassing the second circular geometric object, wherein all angles of the second polytope are right angles; finding a mobile device region as an overlap between the first polytope and the second polytope; and determining that the mobile device is located within the mobile device region.

Determining a location of a mobile device

It is provided a method for controlling access to a physical space. The method is performed in an access control device and comprises the steps of: communicating with an electronic key to obtain an identity of the electronic key; obtaining a plurality of delegations; determining, from one of the delegations, that there is an auxiliary condition, wherein the auxiliary condition is that access is approved for the electronic key by an auxiliary party, authenticated by a digital signature by the auxiliary party; and granting access to the physical space when the plurality of delegations comprises a sequence of delegations covering a delegation path from the access control device to the electronic key such that, in the sequence of delegations, the delegator of the first delegation is the access control device, the receiver of the last delegation is the electronic key, and the auxiliary condition is fulfilled.

Delegation and auxiliary condition for physical access

It is presented a method for determining whether a portable key device is located in an active area in relation to a barrier. The method is performed in an access control device and comprises the steps of: detecting an angle of arrival of a wireless signal from the portable key device using a pair of antennas provided such that a line between the pair of antennas crosses the barrier; and determining whether the portable key device is located within the active area based on the angle of arrival.

Method, device, computer program and computer program product for determining whether a portable key device is located in an active area in relation to a barrier

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Hägersten, Sweden

Håkan Olsson