Device And Computer Readable Medium For Sharing Image Content Based On Collection Proximity

Apparatus are described for performing an action based on determining that the contents of a first image collection and a second image collection are similar. In one aspect, the present disclosure relates to comparing digests representing the two image collections to determine proximity. The digest may be obtained and the comparison made at a server. The actions performed based on a proximity determination may comprise notifying a user of a first collection sharing device of the availability of a second collection sharing device, and/or the retrieval of one or more images from the second image collection. In another aspect of the present disclosure, proximity may be measured by comparing subject faces present in a first image collection to subject faces present in the second image collection.