A method and system for inserting and examining Cookies in the data streams of HTTP connections for the purpose of persistently directing HTTP connections to the same destination. A motion vector of two pixels unit is performed using the reference block and the search region data stored in the memory, thus resulting in obtained a motion vector of two pixels unit. The differential dMdx is formed from this and the position x0 of the shaft is then determined for dMdx =0. Communications between the controlling computer system and the standalone computer system is established using the communication control platform. Presence of an object within the region of interest causes radiofrequency signals transmitted by the radiofrequency transponder to reflect off of the object towards the radiofrequency signal receiver.