We present an implementation of remote educational resource for studying key pre-distribution schemes and multiple key spaces schemes based on unitals i.e. balanced incomplete combinatorial block designs that differ in the scale and number of keys used with a limited amount of key memory. In the chapter, for their construction, desarguesian unitals are used which are the combinatorial block design based on the projective plane over a quadratic field extension. The advantages of using those schemes compared to similar ones, but not based on unitals, are shown. There are used interactive remote access tools for specifying projective plane of this type and unital parameters, and visualizing the execution of the main algorithms presented in the chapter using numerical, algebraic and predicate notations of data. A new routing algorithm and its implementation to build cyber-physical system communication protocols have been represented.