Abstract: It is provided a people detector (1) for detecting when people pass through a doorway. The people detector (1) comprises: a first image source (11); a second image source (12): a processor (60); and a memory (64) storing instructions (67) that, when executed by the processor, cause the people detector (1) to: receive a first stream of images from the first image source (11); determine, based on the first stream of images, a confidence indicator that a single person passes through the doorway; when the confidence indicator indicates confidence, determine that a single person has passed through the doorway; and when the confidence indicator indicates non-confidence, receive a second stream of images from the second image source (12), and determine, based on the second stream of images, how many people has passed through the doorway.

Abstract: It is provided a location determiner comprising: a first antenna; a radio signal modification device, wherein the radio signal modification device is configured to improve an ability to determine whether the portable key device is located on a back side or on a front side of the location determiner, based on obtaining a channel impulse response, CIR, of an impulse signal transmitted from the portable key device, wherein the location determiner is installable such that the back side is in a space being restricted by selectively unlockable a physical barrier and the front side is opposite the back side.

Abstract: It is provided a method for determining when to perform maintenance of a door (15). The method is performed by a maintenance determiner (1). The method comprises: obtaining (40), from a first sensor (6), sensor data indicating kinetic performance of the door: defining (42) a start time of the sensor data based on a first event detected by a second sensor (7), to enable synchronisation of the sensor data: dividing (46) the sensor data in a plurality of time periods (24a-c): evaluating (48) the sensor data in each one of the plurality of time periods by comparing to reference data respectively associated with each one of the plurality of time periods; and determining (50) to perform maintenance, based on the evaluation of the sensor data.

Abstract: According to a first aspect, it is provided a method for processing an input media feed for monitoring a person. The method is performed by a media processing device comprising a media capturing device. The method comprises the steps of: obtaining an input media feed using the media capturing device; providing the input media feed to a local artificial, AI, intelligence engine, to extract at least one feature of the input media feed; and transmitting intermediate results comprising the extracted at least one feature to train a central AI model, while refraining from transmitting the input media feed. The local AI engine forms part of the media processing device. The intermediate results comprise a label of the extracted at least one feature. The label is obtained from an end result of another local AI engine.

Abstract: It is provided a method for determining when a portable key device is located on a front side or on a back side in relation to a barrier secured by an electronic lock. The method is performed in a location determiner and comprises the steps of: obtaining a channel impulse response, CIR, based on an impulse signal transmitted from the portable key device, the CIR being based on a plurality of samples of the impulse signal as received by an antenna being fixedly mounted in relation to the electronic lock; and determining, based on the CIR, whether the portable key device is located on the front side or on the back side.

Abstract: It is provided a location determiner comprising: a first antenna; a radio signal modification device, wherein the radio signal modification device is configured to improve an ability to determine whether the portable key device is located on a back side or on a front side of the location determiner, based on obtaining a channel impulse response, CIR, of an impulse signal transmitted from the portable key device, wherein the location determiner is installable such that the back side is in a space being restricted by selectively unlockable a physical barrier and the front side is opposite the back side.

Abstract: It is provided a method for determining when a portable key device is located on a front side or on a back side in relation to a barrier secured by an electronic lock. The method is performed in a location determiner and comprises the steps of: obtaining a channel impulse response, CIR, based on an impulse signal transmitted from the portable key device, the CIR being based on a plurality of samples of the impulse signal as received by an antenna being fixedly mounted in relation to the electronic lock; and determining, based on the CIR, whether the portable key device is located on the front side or on the back side.

Abstract: According to a first aspect, it is provided a method for processing an input media feed for monitoring a person. The method is performed by a media processing device comprising a media capturing device. The method comprises the steps of: obtaining an input media feed using the media capturing device; providing the input media feed to a local artificial, AI, intelligence engine, to extract at least one feature of the input media feed; and transmitting intermediate results comprising the extracted at least one feature to train a central AI model, while refraining from transmitting the input media feed. The local AI engine forms part of the media processing device. The intermediate results comprise a label of the extracted at least one feature. The label is obtained from an end result of another local AI engine.