# Software Security

VisionPro, Designer, and VisionPro Deep Learning require a valid Security Key connected to the PC running the software during all phases of operation. Any attempts to temporarily remove, substitute, or share a Security Key can cause your system to operate incorrectly, and result in the loss of data.

When you use the VisionPro Deep Learning Service for client/server functionality, you only need a Security Key for the server. The clients do not need a Security Key.