We come across innumerable photographs in the photo albums belonging to the past generations. Such photographs invoke the nostalgia of the viewers. They are reminded about the heritage that was handed over by the past generations for the benefits of the present. But unless there is someone to guide the viewers, it usually proves difficult to identify the persons, periods and occasions portrayed in such photographs. However, the past generations maintained some sort of continuity through personal communications for the benefit of the future generations. The process continues to a certain extent even today.

The progress made in the fields of science and technology contributed many innovative ideas to locate missing links. Geo tagging of photographs is one such contribution developed in the recent past to preserve the precious memories for the benefit of the posterity. The method adopted, is to add or attach geographical details to the photographs as and when they are taken. Geo specific data like location, latitude and longitude are provided to identify the photos. Facilities are available to provide more specific details like time, date and place, where they are being captured. Software also is available to mark the exact place, street and country along with other specific details. Latest innovations make it possible to provide details like shutter speed, aperture, focal length of the camera lens, etc.

In many models of digital cameras, facilities are provided to attach data to the photos automatically. In the absence of such inherent facility in the camera, a Global Positioning System receiver will have to be used. Invariably the GPS in the phone is used to geo tag the high resolution photos taken in the digital camera phone. The 5 mega pixel and 8 mega pixel camera phones with GPS capability can easily geo tag the pictures as and when they are clicked. Geo tagging can, not only provide the location and other details as mentioned earlier, but also help to locate the photos uploaded to the computer. The GPS data offered by the system will be stored in the image file of the camera.

The Geo tagging is a value added facility of the modern 8MP or 5MP camera phones. Even though, the dedicated digital cameras have their modern versions with tailor made software to geo tag the photographs, as and when they are taken, the similar facility in the innovative camera phones is definitely a remarkable feature considering the portability, versatility and user friendliness of such devices. No wonder the 8MP and 5MP camera phones are much sought after by the consumers these days, thanks to the technological up gradations adopted by the manufacturers.

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