A method of activating augmented reality, AR, game content (193, 593) for a location-based AR game, the method comprising: obtaining, by an electronic device (110, 210), a digital representation (141, 241, 341) of a user's interaction with a real-world physical environment (100, 200) comprising a plurality of objects (120A, 120B, 220, 230, 349A, 349B, 349C); discriminating at least two different objects from the plurality of objects (120A, 120B, 220, 230, 349A, 349B, 349C) as a first valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) and a second valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) based on location data derived from the digital representation (141, 241, 341); deriving a first set of authentication features (160, 260, 360, 460) associated with the first valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) and a second set of authentication features (160, 260, 360, 460) associated with the second valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) from the digital representation (141, 241, 341); establishing, by an authentication agent (180, 580), a content access level (183, 583) related to the AR game content as a function of a juxtaposition (470, 570) of the first set of authentication features (160, 260, 360, 460) with respect to the second set of authentication features (160, 260, 360, 460), wherein the juxtaposition is determined based on relative time information with respect to the first set of authentication features (160, 260, 360, 460) and the second set of authentication features (160, 260, 360, 460); activating (670, 675), by the authentication agent (180, 580), AR game content (193, 593) according to the content access level (183, 583) and as a function of activation triggering criteria; and configuring an output device to present the AR game content (193, 593) according to the content access level (183, 583). obtaining, by an electronic device (110, 210), a digital representation (141, 241, 341) of a user's interaction with a real-world physical environment (100, 200) comprising a plurality of objects (120A, 120B, 220, 230, 349A, 349B, 349C); discriminating at least two different objects from the plurality of objects (120A, 120B, 220, 230, 349A, 349B, 349C) as a first valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) and a second valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) based on location data derived from the digital representation (141, 241, 341); deriving a first set of authentication features (160, 260, 360, 460) associated with the first valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) and a second set of authentication features (160, 260, 360, 460) associated with the second valid authentication object (120A, 120B, 220, 230, 349A, 349B, 349C) from the digital representation (141, 241, 341); establishing, by an authentication agent (180, 580), a content access level (183, 583) related to the AR game content as a function of a juxtaposition (470, 570) of the first set of authentication features (160, 260, 360, 460) with respect to the second set of authentication features (160, 260, 360, 460), wherein the juxtaposition is determined based on relative time information with respect to the first set of authentication features (160, 260, 360, 460) and the second set of authentication features (160, 260, 360, 460); activating (670, 675), by the authentication agent (180, 580), AR game content (193, 593) according to the content access level (183, 583) and as a function of activation triggering criteria; and configuring an output device to present the AR game content (193, 593) according to the content access level (183, 583).