PRESENTING MESSAGES TO A USER WHEN A CLIENT DEVICE DETERMINES THE USER IS WITHIN A FIELD OF VIEW OF AN IMAGE CAPTURE DEVICE OF THE CLIENT DEVICE

Various client devices include displays and one or more image capture devices configured to capture video data. Different users of an online system are associated with client devices that exchange information captured by their respective image capture devices. A user of a client device may provide a message to an additional user of an additional client device for asynchronous presentation to the additional user. The message includes information identifying the additional user and one or more privacy settings. When the additional client device identifies the user via captured video data, the online system determines whether the message has previously been presented to the additional user. Subject to the privacy settings included in the message, the additional client device presents the message to the additional user after detecting the additional user and determining the message has not previously been presented to the additional user.