A system for monitoring pedestrians, the system including: a data capture system including an image capture device; a computer system communicatively coupled to the data capture system and configured to receive data from the data capture system representative of a sequence of images (20, 112), the sequence of images including portions of at least a foot or item of footwear of one or more pedestrians; wherein the computer system is operable to: identify, in an image of the sequence of images, an observation of a foot or item of footwear by identifying a portion of the image that includes a foot or item of footwear of a pedestrian; identify, in one or more other images of the sequence of images, one or more further observed feet or items of footwear; and count a number of pedestrians observed in the sequence of images over a time interval using a model to determine whether the observations in the image and the one or more other images belong to the same pedestrian, wherein the computer system is configured to use the model to determine whether observations belong to the same pedestrian in which the model bases the outcome on at least one of: direction of footwear, location of one or more steps, time of observation, shape of footwear, data representative of colour or texture of footwear and/or a leg, and patterns or logos observed on footwear. a data capture system including an image capture device; a computer system communicatively coupled to the data capture system and configured to receive data from the data capture system representative of a sequence of images (20, 112), the sequence of images including portions of at least a foot or item of footwear of one or more pedestrians; wherein the computer system is operable to: identify, in an image of the sequence of images, an observation of a foot or item of footwear by identifying a portion of the image that includes a foot or item of footwear of a pedestrian; identify, in one or more other images of the sequence of images, one or more further observed feet or items of footwear; and count a number of pedestrians observed in the sequence of images over a time interval using a model to determine whether the observations in the image and the one or more other images belong to the same pedestrian, wherein the computer system is configured to use the model to determine whether observations belong to the same pedestrian in which the model bases the outcome on at least one of: direction of footwear, location of one or more steps, time of observation, shape of footwear, data representative of colour or texture of footwear and/or a leg, and patterns or logos observed on footwear. identify, in an image of the sequence of images, an observation of a foot or item of footwear by identifying a portion of the image that includes a foot or item of footwear of a pedestrian; identify, in one or more other images of the sequence of images, one or more further observed feet or items of footwear; and count a number of pedestrians observed in the sequence of images over a time interval using a model to determine whether the observations in the image and the one or more other images belong to the same pedestrian, wherein the computer system is configured to use the model to determine whether observations belong to the same pedestrian in which the model bases the outcome on at least one of: direction of footwear, location of one or more steps, time of observation, shape of footwear, data representative of colour or texture of footwear and/or a leg, and patterns or logos observed on footwear.