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**Tangible Interaction**  Piknik overall is focusing on creating alternative methods of interactions that use magnets embedded in real world objects. According to Tangible Bits \cite{Ishii_1997}, there are three concepts for tangible interaction: transforming surfaces into an active interface, coupling physical objects with digital information, and the use of ambient media with the digital world.   In the context of Piknik, the real world objects can be generic (e.g. a pointing device) or embedded in other objects (e.g. paintbrushes). Piknik will make use of tangible interactions by using magnets embedded in rings or paintbrushes. styluses (acting as paintbrushes).  The use of magnets to paint on the screen or to flip through images is a rich interaction on its own but is there a way to combine touch and magnet based input (physically and mentally). TUIC \cite{Yu_2011} looks into just this idea. It allows tangible interaction directly on multi touch devices. It embeds objects with circuits that simulate touch input to allow the mobile device to detect the object. There are three methods that "TUIC" achieves this, spatial (static touch patterns), frequency (dynamic modulation of touch), and hybrid (a combination of spatial and frequency). Although this would not directly apply to Piknik since it is possible to detect magnets without touching the phone, we will be looking into how we can detect different sizes of magnets and various locations. This can be done using the magnet's intensity or frequency modulation (as described in TUIC). Frequency modulation could be used in a unique way to build custom hardware to modulate the magnetic field. However due to the timeframe of this project, this will be considered as future work.