Visitors can download reading samples of books they are interested in simply by "bumping" their smartphones into designated terminals placed at the respective exhibition stands. The "bumping"-experience allows for a both low-threshold and haptic (good retention, "anchoring") book sample acquisition experience.
What is the core principle of your idea?
The core principle of the idea is to equip exhibition stands with terminals using "bumping" technology. Bump used to be a successful application that allowed for file transfers between users who physically bump their phones together I suggest using the Bump principle between publishers' terminals and an end-user devices rather that between to end-user devices. Visitors/customers can download the software in shops, fair halls, when buying the fair ticket online ...
Can your idea be applied to different formats (in a bookstore, at a trade fair, at a conference)?
Can easily be implemented in all the above contexts.
Would it be possible to turn your idea into a reality, or at least create a prototype of it, at short notice, i.e. by the Frankfurt Book Fair in October 2014?
Due to its success, Bump has recently been acquired by Google (http://blog.bu.mp). Bump is not available any longer, however, similar solutions are.
What do you estimate the costs for the prototype or the final implementation of your idea to be?
Low. Basically software acquisition.