Prototype 2 (and prototype 1) were evaluated in Greece. The idea here was to build a system that offers information of variable complexity about the castle and most importantly allows the visitor to navigate freely in the castle.
A number of solutions were considered in order to allow free navigation:
a) Real – time landmark recognition. This feature is shown below (move to slider 10 1.58). The idea here, is to train the system to recognize a particular location (simply by taking a photo) and allow the user to initiate a presentation about the location by pointing the camera of the device to it. That would be extremely neat to have in the current prototype 2 implementation but the technology is probably still very expensive to purchase.
b) QR-CODE technology. This feature is shown below (Greek language only). The idea here, is to tag each location on the castle with a QR-CODE (similar to the product bar code but it can hold textual as well as numerical information) and allow the user to initiate a presentation about a location simply by photographing the QR-CODE of the location. A more advanced version of the technology, allows a similar functionality to the real-time landmark recognition (i.e., real-time video QR-CODE recognition). It would be interesting to come up with a study to compare the performance and usability of both technologies. At the moment apart from cost (QR-CODE is far cheaper) I see no core differences between the two technologies.
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