VIENNA, Va. and SEOUL, South Korea ─ April 2, 2014 ─ S1 Corporation (“S1”), a global leader in security systems and integration, and VidSys, a world leader in Physical Security Information Management (PSIM) software, today announced a strategic partnership agreement.  S1, an affiliate of the top global corporation Samsung Group, is adopting VidSys as its exclusive go-to-market PSIM platform for