Nokia Technologies Oy

Timo Tapani Mikola

Lioudmila Lucy Blants

Olli Oskari Koskimies

According to an example aspect of the present invention, there is provided an apparatus comprising a memory configured to store an encryption key and a list of access tokens and at least one processing core configured to select a first access token from the list of access tokens based, at least partly, on at least one of a current time and a sequence number, decide, based at least partly on the first access token, whether to grant a user device access to the apparatus, and cause the apparatus to receive a second list of access tokens from at least one of the user device and a second user device.

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Tampere, Finland

Timo Tapani Mikola